991.1 / 991.2 Turbo (2013-2019)
991.1 / 991.2 Turbo (2013-2019)
Filters
Product Description
The SOUL Bolt-On Exhaust Tips are a direct-fit appearance upgrade for the 2013–2019 Porsche 991.1 and 991.2 911 Turbo / Turbo S, providing a cleaner and more aggressive rear-end appearance without replacing the vehicle's complete exhaust system.
Available in GT2 Style Single Wall and Straight Cut Single Wall designs, both configurations feature SOUL's Signature Satin finish and are engineered to bolt directly to the factory-style exhaust-tip interface.
Installation takes only basic hand tools. SOUL uses Mikalor Supra Heavy-Duty W4 T-bolt clamps to provide even clamping force around the exhaust outlets, while an internal alignment ring allows the tips to be positioned precisely within the rear bumper.
The SOUL tips also provide a modest weight reduction compared with the factory Porsche tips. The GT2 Style set weighs approximately 4.4 lbs, while the Straight Cut set weighs approximately 4.3 lbs, compared with approximately 5.35 lbs for the factory tips.
FITMENT:
Fits 2013–2016 Porsche 991.1 911 Turbo
Fits 2013–2016 Porsche 991.1 911 Turbo S
Fits 2017–2019 Porsche 991.2 911 Turbo
Fits 2017–2019 Porsche 991.2 911 Turbo S
Fits 2018 Porsche 991.2 911 Turbo S Exclusive Series
Fits Coupe and Cabriolet applications where offered
Compatible with the factory Porsche exhaust
Compatible with applicable SOUL Performance Products exhaust systems
Compatible with other exhaust systems designed to accept the factory 991 Turbo exhaust-tip interface
Same tip configurations fit both 991.1 and 991.2 Turbo applications
DETAILS:
Direct bolt-on exhaust-tip upgrade
Two available tip styles
GT2 Style Single Wall
Straight Cut Single Wall
Signature Satin finish
Precision-cut stainless-steel construction
.060-inch wall thickness
Laser-cut for consistent fitment
Hand finished
Internal alignment ring allows precise bumper positioning
Mikalor Supra Heavy-Duty W4 T-bolt clamps included
High-strength stainless-steel clamp hardware
Fixture-tested before shipment
No cutting required
No welding required
Installs with basic hand tools
Compatible with factory-style exhaust outlets
No ECU calibration required
No changes to catalytic converters
No changes to oxygen sensors
No changes to turbochargers
No meaningful horsepower gain claimed
Modest weight reduction compared with OEM tips
Backed by SOUL Performance Products' Lifetime Warranty for street and track use
GT2 STYLE SINGLE WALL
The GT2 Style Single Wall configuration provides the more aggressive of the two available appearances.
The single-wall construction keeps the assembly relatively lightweight while changing the visual character of the rear of the 991 Turbo.
SOUL finishes the tips in its Signature Satin finish for a subdued metallic appearance rather than a highly polished chrome look.
Weight: approximately 4.4 lbs per set
Compared with the approximately 5.35-lb factory tip assembly, the GT2 Style tips save approximately:
0.95 lb / 0.43 kg
This represents roughly an 18% reduction in tip weight.
STRAIGHT CUT SINGLE WALL
The Straight Cut Single Wall configuration provides a simpler, traditional motorsport-inspired appearance.
Rather than the GT2-style shape, the outlets use a cleaner straight termination.
The Straight Cut configuration is also finished in:
Signature Satin
and is slightly lighter than the GT2 Style version.
Weight: approximately 4.3 lbs per set
Compared with the approximately 5.35-lb factory tips, the Straight Cut set saves approximately:
1.05 lbs / 0.48 kg
This represents roughly a 20% reduction in tip weight.
WEIGHT COMPARISON
Factory Porsche Tips:
Approximately 5.35 lbs
SOUL GT2 Style Single Wall Tips:
Approximately 4.4 lbs
Weight Savings:
Approximately 0.95 lb
SOUL Straight Cut Single Wall Tips:
Approximately 4.3 lbs
Weight Savings:
Approximately 1.05 lbs
The weight reduction is modest compared with replacing larger exhaust components, so this product should primarily be viewed as an appearance upgrade with a small secondary weight benefit.
DIRECT BOLT-ON INSTALLATION
SOUL designed these tips to install directly onto the factory-style exhaust interface.
No:
Cutting
Welding
ECU programming
Exhaust-system modification
is required for normal installation.
SOUL describes installation as taking only minutes with basic hand tools.
INTERNAL ALIGNMENT RINGS
Each exhaust tip incorporates an internal alignment ring.
This gives the installer some positional adjustment before final clamp tightening, allowing the outlets to be properly centered within the rear bumper.
This is particularly useful for achieving:
Consistent left-to-right positioning
Even tip projection
Proper bumper clearance
Symmetrical appearance
Final adjustment after exhaust-system installation
The clamps can then be tightened after the desired position is established.
MIKALOR SUPRA HEAVY-DUTY W4 CLAMPS
SOUL supplies Mikalor Supra Heavy-Duty W4 clamps with each set.
These clamps are designed to apply substantial and consistent clamping force around the exhaust connection.
SOUL specifies features including:
Stainless-steel construction
High-strength stainless-steel bolt
Swinging bridge
Captive nut
Trunnion-style clamp hardware
Projection-welded construction
This provides a secure mechanical connection while still allowing the tips to be removed or repositioned later.
SINGLE-WALL CONSTRUCTION
Both SOUL options use a single-wall design.
Compared with a heavier multi-wall decorative exhaust tip, the single-wall construction helps minimize unnecessary mass while retaining a clean finished appearance.
This contributes to both SOUL tip configurations weighing less than the original Porsche tip assembly.
SIGNATURE SATIN FINISH
Both current tip styles are offered in SOUL's Signature Satin finish.
The finish provides a subdued stainless-steel appearance that works well with the 991 Turbo's rear styling without the highly reflective appearance of polished chrome.
There are currently no separate:
Black
Polished
Brushed
Carbon Fiber
variants shown for this 991 Turbo Bolt-On Tip product.
COMPATIBLE WITH FACTORY EXHAUST
The SOUL tips can be installed on a 991 Turbo retaining its complete factory exhaust system.
This allows owners to change the rear appearance without replacing:
Catalytic converters
Rear exhaust
Mufflers
Turbochargers
Engine-management components
For a stock vehicle, this is purely a bolt-on downstream modification.
COMPATIBLE WITH SOUL EXHAUST SYSTEMS
The same tips can also be used with applicable SOUL 991 Turbo exhaust systems using the factory-style tip interface.
This includes compatible configurations of SOUL's:
X-Pipe Exhaust
Sport X-Pipe Exhaust
Competition X-Pipe Exhaust
Valved Exhaust System
This also explains why the same GT2 Style and Straight Cut options appear throughout the SOUL 991 Turbo exhaust catalog.
COMPATIBLE WITH OTHER AFTERMARKET EXHAUSTS
SOUL specifies compatibility with other aftermarket exhaust systems that accept the factory Porsche exhaust tips.
This means compatibility depends on the downstream exhaust retaining the appropriate factory-style mounting interface.
For an unknown third-party exhaust system, that interface should be verified before ordering.
TURBO S EXCLUSIVE SERIES
These SOUL tips are particularly useful for the 991.2 Turbo S Exclusive Series.
On several SOUL complete 991 Turbo exhaust systems, the Exclusive Series cannot reuse its original Porsche exhaust tips.
SOUL's GT2 Style or Straight Cut tips therefore provide the appropriate SOUL tip solution when fitting those exhaust systems to an Exclusive Series car.
NO ENGINE PERFORMANCE CHANGE
These exhaust tips are installed at the very end of the exhaust system and are intended primarily as an aesthetic modification.
SOUL does not publish a horsepower or torque increase for either tip design.
Installing the tips does not change:
Turbocharger boost
Catalyst flow
Header flow
ECU calibration
Oxygen-sensor operation
Engine-management strategy
DasMotoring therefore does not advertise a horsepower or torque gain from the tips alone.
NO ECU TUNE REQUIRED
No ECU calibration is required.
The exhaust tips do not interfere with:
Oxygen sensors
Catalytic-converter monitoring
Turbocharger control
Fueling
Ignition timing
Installation is entirely mechanical.
NO EMISSIONS-SYSTEM CHANGES
Because the modification occurs at the exhaust outlets, the SOUL tips do not remove or replace the vehicle's catalytic converters or emissions sensors.
This distinguishes them from the Cat Bypass Pipes, Sport Catalytic Converters, Competition X-Pipe, and other upstream exhaust components within the SOUL 991 Turbo catalog.
Product Description
The SOUL Sport Headers are a direct bolt-on performance upgrade for the 2013–2019 Porsche 991.1 and 991.2 911 Turbo / Turbo S, engineered to improve exhaust-gas flow into the turbochargers, sharpen boost response, increase usable power throughout the RPM range, and add more character to Porsche's 3.8L twin-turbo flat-six.
The factory turbo header uses a relatively basic double-wall design and incorporates an internal support structure within the center runner that interrupts the exhaust-gas flow path. SOUL replaces this arrangement with a freer-flowing single-wall T304L stainless-steel header built around an optimized 3-into-1 merge collector.
SOUL sizes the header outlet at approximately 1.63 inches inside diameter to transition smoothly into the approximately 1.54-inch factory turbocharger inlet. Combined with optimized runner geometry and internal volume, the design is intended to increase exhaust velocity into the turbochargers and provide noticeably quicker response when the driver requests boost.
In addition to the performance benefits, the single-wall construction allows more of the Turbo's mechanical and exhaust character to be heard, producing a sharper exhaust note, increased turbocharger sound, stronger burbles, and more pronounced pops between shifts and during deceleration without intentionally sacrificing ground clearance or introducing undesirable drone.
FITMENT:
Fits 2013–2016 Porsche 991.1 911 Turbo
Fits 2013–2016 Porsche 991.1 911 Turbo S
Fits 2017–2019 Porsche 991.2 911 Turbo
Fits 2017–2019 Porsche 991.2 911 Turbo S
Fits Coupe and Cabriolet applications where offered
SOUL specifies fitment for all Porsche 991 Turbo vehicles
Compatible with the factory catalytic converters
Compatible with SOUL Sport Catalytic Converters
Compatible with SOUL Cat Bypass Pipes
Compatible with the factory rear exhaust
Compatible with SOUL X-Pipe exhaust systems
Compatible with SOUL Valved Exhaust configurations
DETAILS:
Pair of performance Sport Headers
Optimized 3-into-1 merge collector
Designed to increase exhaust velocity into the turbochargers
Designed for quicker turbocharger response
Improved exhaust-flow path compared with the factory header
Eliminates the obstructive internal support found in the factory center runner
Approximately 1.63" header outlet inside diameter
Factory turbocharger inlet approximately 1.54" inside diameter
Smooth transition into the factory turbocharger inlet
Optimized internal header volume
Designed to improve usable power throughout the RPM range
Designed with daily-driven ground clearance in mind
Single-wall construction replaces the factory double-wall header design
Sharper exhaust tone
Increased turbocharger sound
Increased exhaust presence
More pronounced burbles and pops during shifts and deceleration
Designed without intentionally introducing undesirable drone
Constructed from .065-inch-wall T304L stainless steel
Mandrel-bent tubing
Laser-cut flanges
Back-purged TIG welded
ARCAL Prime argon shielding gas used during fabrication
Manufactured in thick-gauge aluminum fixtures to control heat distortion
Fixture-tested before shipment
High-grade installation hardware included
OEM Porsche gaskets included
Direct bolt-on installation
Designed and manufactured in-house in the USA
Backed by SOUL Performance Products' Lifetime Warranty for street and track use
OPTIMIZED 3-INTO-1 MERGE COLLECTOR
The factory 991 Turbo manifold must collect the exhaust pulses from three cylinders and direct them into each turbocharger.
SOUL redesigns this transition around an optimized:
3-into-1 merge collector
intended to create a smoother path for exhaust gases entering the turbocharger.
The objective is not simply to use larger tubing. Runner geometry, collector shape, internal volume, and the transition into the turbine inlet all affect how efficiently exhaust energy reaches the turbo.
SOUL developed the Sport Headers around improving this complete flow path.
FACTORY CENTER-RUNNER RESTRICTION
Looking inside the factory header reveals an internal support structure in the middle runner.
That structure sits directly in the exhaust-gas path and interrupts what would otherwise be a smoother transition toward the collector.
SOUL eliminates this obstruction as part of its redesigned header architecture.
The result provides a cleaner path from:
Cylinder Head → Primary Runner → Merge Collector → Turbocharger
with fewer internal disruptions to exhaust flow.
1.63" HEADER OUTLET
SOUL measured the factory turbocharger inlet at approximately:
1.54" inside diameter
The Sport Header outlet is sized to approximately:
1.63" inside diameter
This allows SOUL to maintain the improved flow characteristics of the larger header while creating a smooth transition into the turbocharger inlet.
The design avoids treating the turbocharger flange as an abrupt restriction at the end of the header.
IMPROVED EXHAUST VELOCITY
SOUL developed the runner geometry and collector to increase exhaust velocity into the turbocharger.
On a turbocharged engine, the energy reaching the turbine directly influences how quickly the turbocharger can respond to changes in engine load.
The Sport Header design is intended to provide:
Faster boost response
Sharper throttle feedback
More immediate acceleration
Improved power delivery throughout the RPM range
More usable power before the transmission needs to downshift
The difference is intended to be felt as improved response rather than simply represented by a peak horsepower number.
QUICKER BOOST RESPONSE
The combination of:
Optimized runners
Improved collector geometry
Cleaner internal flow
Larger header outlet
Reduced internal obstruction
is designed to deliver exhaust energy to the turbochargers more efficiently.
SOUL describes the result as noticeably quicker boost response when the throttle is applied.
This characteristic is particularly useful on the 991 Turbo because improved response can make the car feel stronger during transient acceleration even when the engine is not operating at peak RPM.
SINGLE-WALL VS. FACTORY DOUBLE-WALL CONSTRUCTION
The factory Porsche header uses a double-wall design.
SOUL replaces it with a single-wall stainless-steel design.
Beyond the flow-related changes, the single-wall construction changes how much exhaust and turbocharger sound is transmitted through the system.
The result is a sharper and more mechanical exhaust character.
INCREASED TURBOCHARGER SOUND
The headers sit immediately upstream of the turbochargers, making changes in this area especially noticeable in the Turbo's acoustic character.
SOUL's single-wall construction allows more:
Turbocharger sound
Mechanical exhaust character
Exhaust pulse definition
Throttle-related sound
to be heard compared with the heavier factory double-wall manifolds.
SHARPER EXHAUST CHARACTER
SOUL specifically developed the headers to increase exhaust tone without creating undesirable acoustic characteristics.
Expect:
Sharper exhaust tone
Greater engine presence
Increased turbocharger sound
More audible burbles
Sharper pops between shifts
More pronounced deceleration events
The degree of these changes will vary based on the rest of the exhaust system and vehicle calibration.
NO INTENTIONAL DRONE PENALTY
A performance header does not need to make the vehicle unpleasant during normal driving.
SOUL specifically states that the additional volume and tonal character were achieved without producing undesirable drone qualities in its development.
Actual cabin sound will still depend substantially on the downstream exhaust configuration.
A vehicle retaining the factory catalysts and rear exhaust will naturally be considerably more subdued than one using:
Cat Bypass Pipes
Competition X-Pipe
Sport X-Pipe
Valved Exhaust
Other freer-flowing exhaust components
MAINTAINS GROUND CLEARANCE
SOUL specifically developed the headers while considering clearance on daily-driven vehicles.
The system is intended to improve the header geometry and exhaust flow without sacrificing the underbody ground clearance needed for normal street use.
This is important on lowered 991 Turbos and vehicles that regularly encounter:
Driveway transitions
Speed bumps
Road crowns
Track curbing
.065-INCH T304L STAINLESS CONSTRUCTION
The Sport Headers are constructed from:
.065-inch-wall T304L stainless steel
The material provides an effective combination of:
High-temperature durability
Corrosion resistance
Structural strength
Relatively low mass
Long service life
Suitability for repeated heat cycling
MANDREL-BENT TUBING
SOUL uses mandrel-bent tubing to maintain the intended internal cross-sectional area through the header runners.
This helps preserve consistent:
Runner geometry
Internal diameter
Exhaust velocity
Flow characteristics
through the bends leading toward the merge collector.
LASER-CUT FLANGES
The headers use precision laser-cut flanges to maintain accurate cylinder-head and turbocharger interface geometry.
Accurate flange positioning is critical for:
Exhaust sealing
Turbocharger alignment
Fastener alignment
Installation consistency
Long-term reliability
BACK-PURGED TIG WELDING
SOUL uses back-purged TIG welding during header fabrication.
The inside of the tubing is protected with shielding gas during welding to reduce oxidation and promote clean, complete weld penetration.
SOUL specifically uses:
ARCAL Prime argon
during this fabrication process.
THICK-GAUGE ALUMINUM FABRICATION FIXTURES
Header fabrication generates substantial localized heat.
SOUL builds the headers in thick-gauge aluminum fixtures, which act as heat sinks during welding.
This helps control:
Thermal distortion
Flange movement
Runner alignment
Collector positioning
The rigid fixtures also help SOUL maintain consistent dimensional accuracy from one set of headers to the next.
OEM PORSCHE GASKETS INCLUDED
SOUL includes OEM Porsche gaskets with the Sport Headers.
New high-grade installation hardware is also supplied.
This provides the correct sealing components for installation without requiring the installer to reuse old exhaust gaskets.
FIXTURE-TESTED FITMENT
Each finished component is quality checked and tested in a dedicated fixture before shipment.
This verifies:
Cylinder-head flange alignment
Turbocharger connection alignment
Runner geometry
Overall dimensional consistency
The headers are then foam packed to help protect them during transportation.
DIRECT BOLT-ON INSTALLATION
The Sport Headers are designed as a bolt-on replacement for the factory turbo manifolds.
The package includes:
Left Sport Header
Right Sport Header
High-grade installation hardware
OEM Porsche gaskets
No permanent chassis modification is required as part of normal installation.
COMPATIBLE WITH FACTORY CATALYSTS
The Sport Headers are positioned upstream of the turbochargers.
They do not themselves replace the downstream catalytic converters.
A customer can therefore install the headers while retaining:
Factory turbochargers
Factory catalytic converters
Factory rear exhaust
for a comparatively conservative first-stage configuration.
WITH SOUL SPORT CATALYTIC CONVERTERS
Pairing the Sport Headers with SOUL Sport Catalytic Converters addresses exhaust flow on both sides of the turbocharger.
Sport Headers:
Improve exhaust flow into the turbochargers
Sport Catalytic Converters:
Reduce restriction after the turbochargers
This creates a more comprehensive catted performance configuration while retaining catalytic converters.
WITH SOUL CAT BYPASS PIPES
For a competition-focused configuration, the Sport Headers can be paired with SOUL Cat Bypass Pipes.
This combination provides:
Improved pre-turbo exhaust flow
Optimized merge collectors
Reduced post-turbo restriction
No catalytic converters
Increased turbocharger sound
Greater overall exhaust presence
Cat Bypass Pipes introduce separate emissions and catalyst-monitoring considerations that do not originate from the Sport Headers themselves.
WITH SOUL X-PIPE EXHAUST SYSTEMS
The Sport Headers can be combined with SOUL's modular 991 Turbo rear exhaust lineup, including:
X-Pipe Exhaust
Sport X-Pipe Exhaust
Competition X-Pipe Exhaust
Valved Exhaust System
This allows the headers to remain in place as the rest of the vehicle's exhaust configuration evolves.
PERFORMANCE
SOUL states that the optimized header design provides:
Increased power
Improved boost response
Improved throttle response
More usable power throughout the RPM range
However, the current 991 Turbo Sport Header product page does not publish a controlled before-and-after dyno test or numerical horsepower / torque gain for POR.991T.SH.
DasMotoring therefore does not advertise a specific horsepower or torque increase for this product.
WEIGHT
SOUL's current 991 Turbo Sport Header page does not publish factory or Sport Header weights.
DasMotoring therefore does not advertise a numerical weight-savings figure.
Product Description
The SOUL Cat Bypass Pipes are a direct bolt-on performance upgrade for the 2013–2019 Porsche 991.1 and 991.2 911 Turbo / Turbo S, replacing the restrictive factory catalytic converters with free-flowing 3-inch stainless-steel straight pipes.
Located immediately downstream of the turbochargers, the factory catalytic converters restrict exhaust flow while also suppressing a substantial amount of turbocharger and engine sound. SOUL removes the catalyst assemblies entirely and replaces them with large-diameter, mandrel-bent piping designed to maximize post-turbo exhaust flow.
The result is a dramatic increase in audible turbocharger spool, stronger flat-six exhaust character, increased crackles during deceleration, and improved throttle response.
At approximately 6 lbs, the SOUL Cat Bypass Pipes are approximately 10 lbs / 4.5 kg lighter than the roughly 16-lb factory catalytic-converter assemblies they replace.
FITMENT:
Fits 2013–2016 Porsche 991.1 911 Turbo
Fits 2013–2016 Porsche 991.1 911 Turbo S
Fits 2017–2019 Porsche 991.2 911 Turbo
Fits 2017–2019 Porsche 991.2 911 Turbo S
Fits 2018 Porsche 991.2 911 Turbo S Exclusive Series
Fits Coupe and Cabriolet applications where offered
SOUL specifies fitment for all 991.1 and 991.2 Turbo vehicles
Compatible with the factory rear exhaust
Compatible with SOUL X-Pipe Exhaust
Compatible with SOUL Valved Exhaust System
Compatible with applicable SOUL 991 Turbo exhaust packages
DETAILS:
Pair of catless Cat Bypass Pipes
Completely removes the factory catalytic converters
3-inch diameter piping
Designed to maximize post-turbo exhaust flow
Significantly increases turbocharger spool and turbine sound
Increases flat-six engine and exhaust character
Improves throttle response
Increases audible exhaust crackles during deceleration
Approximately 6 lbs / 2.7 kg
Factory catalyst assemblies approximately 16 lbs / 7.3 kg
Saves approximately 10 lbs / 4.5 kg
Approximately 62.5% lighter than the factory components being replaced
Constructed from .065-inch-wall T304L stainless steel
Smooth mandrel-bent tubing
Thick waterjet-cut flanges
Direct bolt-on installation
Hardware included
Detailed installation instructions included
Fixture-tested prior to shipment
May trigger a catalyst-related check engine light
Custom ECU calibration recommended for catalyst-related CEL management on competition vehicles
No product variants
Backed by SOUL Performance Products' Lifetime Warranty for street and track use
COMPLETE CATALYTIC-CONVERTER DELETE
The SOUL Cat Bypass Pipes completely replace the original Porsche catalytic-converter assemblies.
The factory catalysts sit immediately downstream of the turbochargers and create resistance to the exhaust gases leaving the turbine outlets.
SOUL replaces those assemblies with unrestricted straight-through piping, eliminating the catalyst substrate entirely.
This provides:
Reduced post-turbo restriction
Greater exhaust-flow capacity
Increased turbocharger sound
Stronger engine note
Improved throttle response
Reduced exhaust-system weight
Greater performance potential for modified vehicles
3-INCH EXHAUST PATH
SOUL selected:
3-inch-diameter piping
specifically to maximize exhaust flow and turbocharger sound.
The large-diameter architecture provides additional capacity for vehicles with:
Factory turbochargers
ECU tuning
Increased boost
Intake upgrades
Intercooler upgrades
Turbocharger upgrades
Freer-flowing rear exhaust systems
Other supporting performance modifications
For a high-output turbocharged engine, reducing restriction immediately after the turbines becomes increasingly valuable as exhaust mass flow increases.
REDUCED POST-TURBO RESTRICTION
A turbocharger's turbine must discharge exhaust into everything positioned downstream of it.
Restriction after the turbine increases the pressure into which the turbocharger must exhaust.
The factory catalyst substrates are one of the largest restrictions in this section of the 991 Turbo exhaust system.
Removing them provides a substantially more open path for exhaust gases leaving the turbochargers.
The Cat Bypass Pipes are therefore designed to improve the exhaust system's ability to support:
Increased airflow
Increased boost
Higher engine output
Modified turbocharger configurations
SIGNIFICANTLY MORE TURBO SOUND
Sound is one of the largest changes produced by the Cat Bypass Pipes.
The factory catalysts attenuate much of the sound generated by the Turbo's turbines before it reaches the rear exhaust.
Removing the catalyst substrates allows dramatically more:
Turbo spool
Turbo whistle
Turbine sound
Boost-related acoustic feedback
Mechanical turbocharger character
to pass downstream.
SOUL specifically developed the 3-inch design around making the turbochargers considerably more audible.
INCREASED ENGINE NOTE
Removing the catalytic converters also allows significantly more of the 3.8L twin-turbo flat-six exhaust character to pass through the system.
Expect:
Greater exhaust presence
More aggressive acceleration sound
Increased high-RPM intensity
Stronger throttle-related feedback
More audible shift events
Greater deceleration character
The total sound level will depend heavily on which rear exhaust is installed behind the Cat Bypass Pipes.
DECELERATION CRACKLES
SOUL specifically highlights the increase in exhaust crackles during deceleration after removing the factory catalysts.
The freer exhaust path allows more of the engine calibration's existing overrun behavior to be heard.
The amount of crackling will vary with:
ECU calibration
991.1 vs. 991.2 software
Driving mode
Rear exhaust configuration
Other engine modifications
The Cat Bypass Pipes do not themselves create artificial combustion events; they make existing exhaust events considerably more audible.
IMPROVED THROTTLE RESPONSE
SOUL specifically identifies improved throttle response as one of the benefits of removing the restrictive factory catalysts.
Reducing exhaust restriction directly downstream of the turbochargers allows the exhaust system to respond more freely to changing engine load.
This characteristic becomes particularly relevant on tuned vehicles operating at greater airflow and boost levels.
WITH THE FACTORY REAR EXHAUST
The Cat Bypass Pipes can be installed while retaining Porsche's original rear exhaust.
This configuration provides:
Significantly increased turbocharger sound
Reduced post-turbo restriction
Improved throttle response
Approximately 10 lbs of weight savings
Retained factory rear exhaust
Retained factory exhaust-tip appearance
Keeping the factory rear exhaust provides the most restrained overall sound configuration available with these catless pipes.
WITH THE SOUL X-PIPE EXHAUST
Pairing the Cat Bypass Pipes with SOUL's rear X-Pipe creates a substantially more aggressive exhaust system.
The combination provides:
Catless 3-inch catalyst sections
3-inch rear X-pipe architecture
Proprietary X-pipe mixing chamber
Quad straight-through race resonators
Increased turbocharger sound
Increased flat-six exhaust volume
Significant rear exhaust-system weight reduction
This component combination corresponds closely to SOUL's complete Competition X-Pipe Exhaust System architecture.
WITH THE SOUL VALVED EXHAUST
The Cat Bypass Pipes can also be combined with SOUL's Valved Exhaust System.
This creates an especially useful configuration for customers who want the flow and sound benefits of a catless exhaust but still want active volume control.
The combination provides:
Catless catalyst sections
Reduced post-turbo restriction
Aggressive valves-open operation
Quieter resonated valves-closed operation
Increased turbocharger sound
Remote valve control
HomeLink integration capability
This is a considerably more flexible arrangement than combining the Cat Bypass Pipes with a permanently open rear exhaust.
CAT BYPASS PIPES VS. SPORT CATALYTIC CONVERTERS
SOUL Cat Bypass Pipes
$1,295.00
Completely catless
3-inch straight-through piping
Approximately 6 lbs
Saves approximately 10 lbs
Maximum catalyst-section flow
Maximum turbocharger sound
May trigger catalyst-related CELs
Competition / off-road focused
SOUL Sport Catalytic Converters
$3,695.00
Retain high-flow catalysts
Approximately 11.6 lbs
Saves approximately 4.4 lbs
Increased turbocharger sound
Improved throttle response
Developed for catalyst-related CEL-free operation
More conservative catted configuration
The Cat Bypass Pipes are the more aggressive solution for customers prioritizing flow, sound, weight reduction, and competition use.
10-LB WEIGHT REDUCTION
SOUL publishes the following weights:
Factory Catalytic Converter Assemblies:
Approximately 16 lbs / 7.3 kg
SOUL Cat Bypass Pipes:
Approximately 6 lbs / 2.7 kg
Weight Savings:
Approximately 10 lbs / 4.5 kg
That removes approximately:
62.5%
of the weight of the factory catalyst assemblies.
Because this mass is positioned toward the rear of the 911, the reduction is particularly desirable for track-oriented vehicles.
.065-INCH T304L STAINLESS CONSTRUCTION
Each Cat Bypass Pipe is manufactured from:
.065-inch-wall T304L stainless steel
This material provides:
High-temperature durability
Corrosion resistance
Structural strength
Long service life
Consistent fabrication characteristics
Suitability for repeated street and track heat cycling
SMOOTH MANDREL BENDS
SOUL uses smooth mandrel bends to preserve the internal diameter of the tubing as it follows the required exhaust routing.
Maintaining a consistent internal cross-section helps avoid unnecessary restrictions in the post-turbo exhaust path.
THICK WATERJET-CUT FLANGES
The Cat Bypass Pipes use thick waterjet-cut flanges.
These are designed to maintain:
Proper sealing
Exhaust alignment
Dimensional stability
Durability through repeated thermal cycling
FIXTURE-TESTED FITMENT
Every set is tested in a dedicated fabrication fixture prior to shipment.
This helps verify:
Flange location
Pipe geometry
Downstream exhaust alignment
Overall dimensional consistency
Following quality control, SOUL foam packs the components to help protect them during shipment.
DIRECT BOLT-ON INSTALLATION
The Cat Bypass Pipes directly replace the factory catalytic-converter assemblies.
SOUL includes:
Left Cat Bypass Pipe
Right Cat Bypass Pipe
Required installation hardware
Detailed installation instructions
No cutting or welding is required during normal installation.
SOUL describes the installation as suitable for experienced DIY enthusiasts with appropriate tools and mechanical ability.
CHECK ENGINE LIGHT
Because the Cat Bypass Pipes completely remove the factory catalytic converters, the vehicle's emissions-monitoring system may recognize that catalyst functionality is no longer present.
SOUL explicitly states that this product:
may trigger a check engine light.
DasMotoring therefore does not advertise these pipes as CEL-free.
ECU TUNING
A custom ECU tune is not required for the Cat Bypass Pipes to physically install.
However, SOUL recommends an appropriate custom ECU calibration to address catalyst-related check engine lights on vehicles used for track or competition purposes.
A suitable performance calibration may also take greater advantage of:
Reduced post-turbo restriction
Increased exhaust-flow capacity
Higher boost targets
Supporting airflow modifications
Turbocharger upgrades
NO PUBLISHED STANDALONE DYNO FIGURE
SOUL identifies improved throttle response and increased performance potential as benefits of removing the factory catalytic converters.
However, the current Cat Bypass Pipe product page does not provide a controlled factory-catalyst versus Cat-Bypass dyno comparison.
DasMotoring therefore does not advertise a specific horsepower or torque increase from the Cat Bypass Pipes alone.
MODULAR 991 TURBO EXHAUST SYSTEM
The Cat Bypass Pipes work within SOUL's modular 991 Turbo exhaust ecosystem.
They can be combined with:
Factory rear exhaust
SOUL X-Pipe Exhaust
SOUL Valved Exhaust
This allows an owner to upgrade the catalyst and rear exhaust sections independently.
For example:
Cat Bypass + Factory Rear Exhaust
provides increased turbo sound and reduced restriction while retaining the factory rear muffler.
Cat Bypass + SOUL X-Pipe
creates a much more aggressive fixed-volume competition exhaust.
Cat Bypass + SOUL Valved Exhaust
adds active sound control to the catless configuration.
EMISSIONS / COMPETITION USE NOTE
The SOUL Cat Bypass Pipes completely remove the factory catalytic converters.
SOUL states that this product is:
Not CARB certified
May not be legal for use on emissions-controlled vehicles
Intended for off-road / competition use only
Customers are responsible for determining whether their vehicle configuration and intended use comply with applicable federal, state, and local regulations.
Product Description
The SOUL Sport Catalytic Converters are a direct bolt-on performance upgrade for the 2013–2019 Porsche 991.1 and 991.2 911 Turbo / Turbo S, replacing the restrictive factory catalytic converters with premium high-flow catalyst assemblies designed to improve exhaust flow, turbocharger sound, throttle response, and performance while retaining a catted exhaust configuration.
Positioned immediately downstream of the turbochargers, the factory catalytic converters are one of the primary restrictions in the 991 Turbo exhaust system. SOUL's freer-flowing catalysts reduce this restriction while allowing significantly more of the turbochargers' natural spool and turbine sound to pass through the exhaust.
Unlike completely catless bypass pipes, the Sport Catalytic Converters retain catalytic-converter functionality and were specifically developed by SOUL to deliver increased performance without catalyst-related check engine lights under normal operating conditions.
The SOUL assemblies weigh approximately 11.6 lbs compared with 16 lbs for the factory components, reducing exhaust-system weight by approximately 4.4 lbs / 2.0 kg.
FITMENT:
Fits 2013–2016 Porsche 991.1 911 Turbo
Fits 2013–2016 Porsche 991.1 911 Turbo S
Fits 2017–2019 Porsche 991.2 911 Turbo
Fits 2017–2019 Porsche 991.2 911 Turbo S
Fits 2018 Porsche 991.2 911 Turbo S Exclusive Series
Fits Coupe and Cabriolet applications where offered
SOUL specifies fitment for all Porsche 991.1 and 991.2 Turbo vehicles
Compatible with the factory rear exhaust
Compatible with the SOUL X-Pipe Exhaust
Compatible with the SOUL Valved Exhaust System
Compatible with applicable SOUL 991 Turbo exhaust packages
DETAILS:
Pair of high-flow Sport Catalytic Converters
Replaces the restrictive factory catalytic-converter assemblies
Retains a catted exhaust configuration
Premium high-flow catalyst elements
Designed to increase post-turbo exhaust flow
Designed to improve throttle response
Increases audible turbocharger spool and turbine sound
Increases overall exhaust character
Designed to provide additional performance without catalyst-related check engine lights
SOUL assemblies weigh approximately 11.6 lbs / 5.3 kg
Factory catalyst assemblies weigh approximately 16 lbs / 7.3 kg
Saves approximately 4.4 lbs / 2.0 kg
Approximately 27.5% lighter than the factory components being replaced
Constructed from .065-inch-wall T304L stainless steel
Smooth mandrel-bent tubing
Thick exhaust flanges
Fixture-tested prior to shipment
Installation hardware included
Detailed installation instructions included
Direct bolt-on installation
No catalyst variants
No tip variants
No transmission variants
Backed by SOUL Performance Products' Lifetime Warranty for street and track use
HIGH-FLOW CATALYTIC CONVERTERS
The factory catalytic converters are positioned immediately downstream of the 991 Turbo's turbochargers.
This location makes catalyst flow particularly important because the turbine must discharge its exhaust gases directly into the catalyst section.
SOUL replaces the restrictive factory assemblies with premium high-flow catalytic converters designed to reduce post-turbine restriction while maintaining catalysts in the exhaust system.
Potential benefits include:
Increased exhaust-flow capacity
Improved throttle response
Increased turbocharger sound
Greater performance potential
Stronger exhaust character
Retained catalytic converters
Fewer diagnostic compromises than a completely catless configuration
REDUCED POST-TURBO RESTRICTION
Exhaust restriction downstream of a turbocharger creates pressure against which the turbine must discharge.
Reducing this restriction can improve the overall efficiency of the exhaust path and provide additional flow capacity as engine output increases.
The Sport Catalytic Converters address one of the largest restrictions in the factory system without eliminating the catalysts entirely.
This becomes increasingly valuable as the vehicle receives modifications such as:
ECU tuning
Increased boost
Intake upgrades
Intercooler upgrades
Freer-flowing rear exhaust components
Turbocharger upgrades
INCREASED THROTTLE RESPONSE
SOUL specifically identifies improved throttle response as one of the benefits of the Sport Catalytic Converters.
Reducing restriction immediately after the turbochargers allows the exhaust system to respond more freely as engine load changes.
The improvement can become particularly noticeable when the Sport Cats are paired with additional performance modifications.
INCREASED TURBOCHARGER SOUND
One of the most noticeable changes from replacing the factory catalysts is increased audible turbocharger activity.
Expect more:
Turbo spool
Turbine whistle
Boost-related exhaust sound
Throttle-related acoustic feedback
Mechanical turbocharger character
The factory catalyst substrates suppress a substantial amount of this sound before it reaches the rear exhaust.
The freer-flowing SOUL catalysts allow considerably more of it to pass through.
EXHAUST SOUND
The Sport Catalytic Converters also allow more of the 3.8L twin-turbo flat-six exhaust character to reach the rear of the vehicle.
Compared with the factory catalysts, expect:
Greater turbocharger presence
More exhaust texture under load
Stronger acceleration sound
Increased high-RPM presence
More audible throttle transitions
Greater deceleration character
The overall increase in volume will depend heavily on the rear exhaust installed behind the Sport Cats.
WITH THE FACTORY REAR EXHAUST
The Sport Catalytic Converters can be installed while retaining Porsche's original rear exhaust.
This is the most conservative configuration and provides:
Reduced catalyst restriction
Increased turbocharger sound
Improved throttle response
Retained factory rear exhaust
Retained factory exterior appearance
More restrained overall volume than a complete aftermarket exhaust system
This makes the Sport Cats a logical first-stage modification for an otherwise-stock 991 Turbo.
WITH THE SOUL X-PIPE EXHAUST
Pairing these Sport Catalytic Converters with SOUL's rear X-Pipe creates a much more comprehensive catted performance exhaust system.
The combination provides:
High-flow catalysts
Full 3-inch rear exhaust architecture
Proprietary X-pipe mixing chamber
Quad race resonators
Increased turbocharger sound
Increased overall exhaust volume
Greater rear weight reduction
This combination is effectively the component architecture behind SOUL's complete Sport X-Pipe Exhaust System.
WITH THE SOUL VALVED EXHAUST
The Sport Catalytic Converters can also be paired with SOUL's Valved Exhaust System.
This creates a high-flow catted setup while adding active sound control.
The complete configuration provides:
High-flow catalytic converters
Aggressive valves-open exhaust path
Quieter resonated valves-closed path
Increased turbocharger sound
Remote valve control
HomeLink integration capability
This is particularly attractive for owners who want increased flow without giving up the ability to substantially reduce exhaust volume when desired.
SPORT CATS VS. FACTORY CATALYSTS
Factory Catalytic Converters
Original Porsche emissions hardware
Greater exhaust restriction
Greater turbocharger sound attenuation
Approximately 16 lbs
SOUL Sport Catalytic Converters
Premium high-flow catalyst assemblies
Reduced post-turbo restriction
Increased turbocharger sound
Improved throttle response
Approximately 11.6 lbs
Approximately 4.4 lbs lighter
Developed for catalyst-related CEL-free operation
SPORT CATS VS. CAT BYPASS PIPES
SOUL Sport Catalytic Converters
$3,695.00
Retain catalytic converters
High-flow catalyst elements
Approximately 11.6 lbs
Saves approximately 4.4 lbs
Increased turbo sound
Improved throttle response
Developed to avoid catalyst-related CELs under normal operation
More conservative configuration
SOUL Cat Bypass Pipes
$1,295.00
Completely catless
Straight-through exhaust path
Approximately 6 lbs
Saves approximately 10 lbs
Greater turbocharger sound
Lower catalyst-section restriction
May trigger catalyst-related check engine lights
Competition / off-road-oriented configuration
For customers who want improved flow and sound while retaining catalysts, the Sport Catalytic Converters are the more appropriate option.
4.4-LB WEIGHT REDUCTION
SOUL publishes the following weights:
Factory Catalytic Converter Assemblies:
Approximately 16 lbs / 7.3 kg
SOUL Sport Catalytic Converters:
Approximately 11.6 lbs / 5.3 kg
Weight Savings:
Approximately 4.4 lbs / 2.0 kg
That represents approximately a:
27.5% reduction
in the weight of the catalyst assemblies being replaced.
DESIGNED FOR CEL-FREE OPERATION
SOUL specifically developed the Sport Catalytic Converters around increasing flow without creating the catalyst-monitoring problems associated with fully catless pipes.
SOUL describes the product as providing:
Added performance without a check engine light.
For DasMotoring purposes, this should be treated as the manufacturer's intended operating behavior rather than an unconditional guarantee for every vehicle.
Diagnostic behavior can still potentially be influenced by:
Oxygen-sensor condition
ECU software
Vehicle condition
Additional modifications
Catalyst condition over time
NO ECU TUNE REQUIRED
SOUL does not specify ECU tuning as a requirement for installation of the Sport Catalytic Converters.
They are designed as a direct bolt-on hardware upgrade.
A performance calibration may still provide additional gains by taking advantage of the increased exhaust-flow capacity, but tuning is not required simply to install the catalysts.
NO PUBLISHED STANDALONE DYNO NUMBER
SOUL describes the Sport Catalytic Converters as providing a significant increase in power along with improved throttle response and sound.
However, the current product page does not publish a controlled factory-catalyst versus Sport-Catalyst dyno comparison.
DasMotoring therefore does not advertise a specific horsepower or torque increase from this product alone.
CURRENT CATALYST SPECIFICATION
SOUL's current product page describes these assemblies as using:
Premium high-flow catalysts
but does not currently publish:
Catalyst cell count
Catalyst manufacturer
Substrate material
Precious-metal loading
DasMotoring therefore does not advertise any of those specifications unless confirmed for current production.
.065-INCH T304L STAINLESS CONSTRUCTION
Each Sport Catalytic Converter assembly is manufactured from:
.065-inch-wall T304L stainless steel
This provides:
High-temperature durability
Corrosion resistance
Structural strength
Consistent fabrication characteristics
Long-term exhaust-system reliability
SMOOTH MANDREL BENDS
SOUL uses smooth mandrel-bent tubing to maintain a consistent internal flow area through the catalyst assemblies.
Maintaining tubing geometry through bends helps avoid unnecessary restrictions downstream of the turbochargers.
THICK EXHAUST FLANGES
The assemblies use substantial exhaust flanges designed to maintain alignment and sealing under repeated thermal cycling.
This is particularly important immediately downstream of the turbochargers, where temperatures can become extremely high.
FIXTURE-TESTED FITMENT
Every set is tested in a dedicated fabrication fixture prior to shipment.
This verifies:
Flange position
Exhaust alignment
Downstream connection geometry
Overall dimensional consistency
The assemblies are then quality checked and foam packed for shipping.
DIRECT BOLT-ON INSTALLATION
The Sport Catalytic Converters directly replace the factory catalyst assemblies.
SOUL includes:
Left Sport Catalytic Converter
Right Sport Catalytic Converter
Installation hardware
Detailed installation instructions
No cutting or welding is required during normal installation.
MODULAR 991 TURBO EXHAUST ARCHITECTURE
These Sport Catalytic Converters work particularly well within SOUL's modular 991 Turbo exhaust family.
An owner can combine them with:
Factory rear exhaust
SOUL X-Pipe Exhaust
SOUL Valved Exhaust
allowing the exhaust system to evolve without necessarily replacing every component at once.
EMISSIONS NOTE
Although the Sport Catalytic Converters retain catalytic converters, they replace Porsche's original emissions hardware with aftermarket high-flow components.
SOUL states that this product is not CARB certified and may not be legal for use on emissions-controlled vehicles. SOUL identifies it as intended for off-road use.
Customers are responsible for determining whether their vehicle and complete exhaust configuration comply with applicable federal, state, and local regulations.
Product Description
The SOUL Valved Exhaust System transforms the 2013–2019 Porsche 991.1 and 991.2 911 Turbo / Turbo S from one of Porsche's most subdued performance cars into a true dual-personality exhaust system.
Unlike the factory 991 Turbo exhaust, which is non-valved, SOUL uses a purpose-built dual-path architecture with a full 3-inch primary flow path for maximum sound and performance and a resonated 2-inch secondary flow path for quieter cruising.
With the valves open, exhaust is routed through the larger 3-inch primary path for an aggressive, refined flat-six tone with substantially increased turbocharger presence. Close the valves and exhaust is redirected through the smaller secondary path and oversized resonators, dramatically reducing volume, smoothing exhaust pulses, and suppressing unwanted cabin drone.
Because the factory 991 Turbo does not provide PSE-style exhaust valve controls, SOUL includes an independent Valve Controller Kit. Valve operation can be controlled using the supplied remotes or programmed to compatible HomeLink buttons inside the vehicle.
The system can be configured three ways upstream: retain the factory catalytic converters, add SOUL Competition Cat Bypass Pipes, or add SOUL Sport Catalytic Converters. Customers may also retain the factory tips on most vehicles or select SOUL's T316L stainless-steel Straight Cut or GT2 Style tips.
FITMENT:
Fits Porsche 991.1 911 Turbo
Fits Porsche 991.1 911 Turbo S
Fits Porsche 991.2 911 Turbo
Fits Porsche 991.2 911 Turbo S
SOUL specifies fitment across 2013–2019 991 Turbo models
Fits Coupe and Cabriolet applications where offered
Compatible with factory catalytic converters
Compatible with SOUL Competition Cat Bypass Pipes
Compatible with SOUL Sport Catalytic Converters
Factory tips may be reused on most applications
Factory tips cannot be reused on the 991.2 Turbo S Exclusive Series
Turbo S Exclusive Series vehicles must select compatible SOUL exhaust tips
DETAILS:
True dual-path valved exhaust system
Specifically developed for the 991 Turbo / Turbo S
Adds active exhaust-volume control to a platform that was factory-equipped with a non-valved exhaust
3-inch primary flow path
2-inch resonated secondary flow path
Valves-open path prioritizes sound and performance
Valves-closed path prioritizes refinement and reduced cabin presence
Oversized resonators in the secondary flow path
Resonators suppress sound level, drone, and exhaust pulses
Tuned-length primary flow path
Balance pipe blends the primary exhaust streams
Increased turbocharger sound
Increased flat-six exhaust character
Substantial difference between valves-open and valves-closed operation
More refined alternative to a GT2 RS-style direct dump-pipe configuration
Included independent valve-control system
Valve control via supplied remotes
Compatible with programming to vehicle HomeLink buttons
Available with factory catalytic converters
Available with Competition Cat Bypass Pipes
Available with Sport Catalytic Converters
Optional T316L stainless-steel exhaust tips
Factory tips can be reused where compatible
Main exhaust constructed from .065-inch-wall T304L stainless steel
Mandrel-bent tubing
Fixture-tested before shipment
Required installation hardware included
Direct bolt-on installation
Backed by SOUL Performance Products' Lifetime Warranty for street and track use
A TRUE VALVED EXHAUST FOR THE 991 TURBO
The factory 991 Turbo exhaust system is notably different from many Porsche Carrera PSE systems.
The 991 Turbo did not leave the factory with an active exhaust-valve system controlled by a PSE button.
SOUL therefore had to develop an entirely new exhaust-control architecture rather than simply reusing Porsche's existing valve commands.
The system provides two genuinely different exhaust paths:
Valves Open:
Full 3-inch primary flow path
Valves Closed:
Resonated 2-inch secondary flow path
The result is substantially greater control over the vehicle's sound character than a conventional fixed exhaust.
VALVES OPEN
Opening the exhaust valves directs gases through the system's larger:
3-inch primary flow path
This mode is designed to maximize:
Exhaust-flow capacity
Turbocharger sound
Flat-six character
Exterior volume
Performance potential
Throttle-related acoustic feedback
SOUL describes the result as aggressive while still maintaining a more refined character than a simple direct-dump arrangement.
Expect significantly greater:
Turbo spool
Turbine whistle
Acceleration sound
High-RPM presence
Shift-related exhaust events
Deceleration character
VALVES CLOSED
Closing the valves redirects exhaust into the:
2-inch secondary flow path
before routing gases through oversized resonators.
The quieter path was specifically developed to reduce:
Exterior volume
Low-RPM cabin presence
Exhaust drone
Unwanted exhaust pulses
Long-distance cruising fatigue
SOUL designed this mode for situations such as:
Highway driving
Early-morning starts
Residential areas
Long-distance touring
Low-profile street driving
Track facilities with strict sound limits
Despite the reduced sound level, SOUL states that the secondary path still offers improved flow compared with the factory muffler.
OVERSIZED SECONDARY RESONATORS
Packaging a useful quiet path inside the rear of a 991 Turbo presents a significant engineering challenge.
Simply reducing the diameter of the secondary tubing was not enough to achieve the sound reduction SOUL wanted.
SOUL therefore routes the smaller secondary piping into oversized resonators.
These resonators work to:
Suppress overall sound level
Smooth exhaust pulses
Reduce undesirable frequencies
Minimize cabin drone
Provide a noticeably quieter valves-closed mode
This allows the car to remain civilized without forcing both exhaust modes through the same muffling architecture.
TUNED-LENGTH PRIMARY FLOW PATH
SOUL originally experimented with its more traditional blended X-pipe concept.
However, when combined with the secondary flow path, SOUL found that the X-pipe configuration did not create enough difference in volume between open and closed modes.
The production Valved Exhaust therefore uses a:
Tuned-length primary flow path with a balance pipe
This provides a stronger acoustic distinction between the two valve positions.
BALANCE PIPE
The primary exhaust streams are connected through a balance pipe rather than SOUL's conventional full X-pipe mixing chamber.
This architecture was selected specifically for the Valved Exhaust after multiple prototypes.
It helps produce:
A more noticeable valves-open sound
Smoother exhaust character
Better integration between the two cylinder-bank exhaust streams
Greater distinction between open and closed modes
MORE REFINED THAN GT2 RS-STYLE DUMP PIPES
A GT2 RS-style exhaust concept routes gases from the catalyst area almost directly toward the rear bumper.
That can produce tremendous volume but also allows considerably more:
Turbocharger mechanical sound
Valve-operation noise
Raw exhaust texture
Abrupt acoustic behavior
SOUL specifically developed the Valved Exhaust to provide a more refined alternative.
The system still becomes aggressive with the valves open, but without relying on an extremely short direct-dump architecture.
INDEPENDENT VALVE CONTROLLER
Because the factory 991 Turbo exhaust is non-valved, the vehicle does not have the vacuum-control system or factory electronic exhaust-valve infrastructure necessary to operate an aftermarket valved system by itself.
SOUL therefore includes an independent Valve Controller Kit.
This provides direct driver control over valve position.
The exhaust does not rely on Porsche's factory PSE button because the 991 Turbo did not use that system.
REMOTE CONTROL
The included controller provides remote valve operation.
The driver can select between:
Quiet / Valves Closed
and
Aggressive / Valves Open
without changing the underlying vehicle exhaust hardware.
HOMELINK INTEGRATION
SOUL's controller can also be programmed to compatible HomeLink buttons inside the vehicle.
This provides an integrated solution without requiring the driver to keep the supplied remote immediately accessible.
HomeLink can therefore be used to command the exhaust valves from the factory interior controls.
THREE CATALYST CONFIGURATIONS
The Valved Exhaust can be configured with:
Reuse OEM Catalytic Converters
SOUL Competition Cat Bypass Pipes
or
SOUL Sport Catalytic Converters
This makes the system unusually flexible because the same basic valved rear exhaust can serve everything from a relatively mild street car to a highly modified competition-focused Turbo.
REUSE OEM CATALYTIC CONVERTERS
The least expensive and most conservative configuration retains Porsche's original catalyst assemblies.
This configuration provides:
Full valved-exhaust functionality
3-inch valves-open path
Resonated valves-closed path
Increased exhaust character
Increased turbocharger presence
Retained factory catalysts
Lowest package price
For customers primarily interested in sound control and exhaust character, this is the logical starting point.
COMPETITION CAT BYPASS CONFIGURATION
The Competition configuration adds SOUL Cat Bypass Pipes and removes the factory catalytic converters.
Benefits include:
Reduced post-turbo restriction
Greater turbocharger sound
Greater exhaust volume
Increased flow capacity
Reduced catalyst-section weight
Greater tuning potential
Because the catalytic converters are removed, this configuration introduces additional emissions and diagnostic considerations.
It is intended for competition / off-road applications where catalyst retention is not required.
SPORT CATALYTIC CONVERTER CONFIGURATION
The Sport configuration replaces the factory catalysts with SOUL's high-flow Sport Catalytic Converters.
This provides a middle ground between the OEM-catalyst and completely catless configurations.
Benefits include:
Increased catalyst-section flow
Increased turbocharger sound
Improved throttle response
Greater performance potential
Retained catalytic converters
More street-oriented operation than the Competition configuration
This is the most comprehensive catted version of the SOUL Valved Exhaust System.
CURRENT SOUL HIGH-FLOW CATALYST DESIGN
Current product data for the Sport Cat configuration identifies a SOUL-designed 300-cell catalyst with a custom-specified precious-metal coating and triple-metal matrix core.
The Sport Cat option should therefore be treated separately from older 991 Turbo exhaust descriptions that referenced earlier catalyst specifications.
3D-PRINTED 316L COMPONENTS
Current product information for the Valved Exhaust also identifies the use of metal 3D-printed 316L stainless-steel sections where the geometry benefits from additive manufacturing.
These complex components allow SOUL to create optimized internal flow paths that would be difficult to reproduce using conventional cut-and-weld fabrication alone.
.065-INCH T304L STAINLESS CONSTRUCTION
The primary fabricated exhaust components use:
.065-inch-wall T304L stainless steel
This provides:
High-temperature durability
Corrosion resistance
Structural strength
Consistent fabrication
Long service life
Suitability for repeated street and track heat cycling
BACK-PURGED TIG WELDING
Current SOUL fabrication specifications use back-purged TIG welding to promote proper weld penetration and minimize oxidation inside the tubing.
This contributes to:
Strong weld joints
Cleaner internal surfaces
Improved durability
Consistent exhaust-flow paths
EXHAUST TIP OPTIONS
Three tip configurations are available:
Reuse OEM Tips
Signature Satin GT2 Style Single Wall
Signature Satin Straight Cut Single Wall
SOUL's current optional tips are manufactured from T316L stainless steel.
REUSE OEM TIPS
Most standard 991 Turbo and Turbo S vehicles can reuse their original factory exhaust tips.
This provides:
OEM rear appearance
Lowest purchase price
No additional tip cost
The OEM-tip option is available with all three catalyst configurations.
GT2 STYLE SINGLE WALL TIPS
The GT2 Style tips provide a more aggressive motorsport-inspired appearance.
They are manufactured from T316L stainless steel and finished in SOUL's Signature Satin.
STRAIGHT CUT SINGLE WALL TIPS
The Straight Cut tips provide a cleaner and more traditional motorsport-style outlet.
They are also manufactured from T316L stainless steel with SOUL's Signature Satin finish.
TURBO S EXCLUSIVE SERIES
The 991.2 Turbo S Exclusive Series cannot reuse its factory exhaust tips with the SOUL Valved Exhaust System.
Exclusive Series customers must select:
Signature Satin GT2 Style Single Wall
or
Signature Satin Straight Cut Single Wall
Do not fulfill an Exclusive Series order using the OEM-tip configuration.
FACTORY CATS VS. SPORT CATS VS. COMPETITION
Reuse OEM Cats
Starts at $3,995
Retains factory catalysts
Most conservative configuration
Full valved functionality
Lowest cost
Best starting point for sound-focused customers
Competition
Starts at $4,995
Catless
Maximum catalyst-section flow
Maximum turbocharger sound
Greater emissions / CEL considerations
Competition-oriented
Sport Cats
Starts at $6,995
High-flow catalytic converters
Increased flow compared with factory catalysts
Retains catalytic converters
More street-oriented than Competition
Most comprehensive catted configuration
VALVED EXHAUST VS. X-PIPE
SOUL Valved Exhaust
Starts at $3,995
Active sound control
3-inch primary path
Resonated 2-inch secondary path
Included controller
HomeLink compatibility
Available with factory, Sport, or catless Competition catalyst configurations
SOUL X-Pipe
Starts at $2,995
Fixed/non-valved design
3-inch rear exhaust
Quad race resonators
Retains existing catalysts
Simpler and less expensive
The Valved Exhaust is the better solution for customers who place a high value on being able to substantially change the vehicle's sound at the push of a button.
VALVED EXHAUST VS. SPORT X-PIPE
SOUL Valved Exhaust with Sport Cats
Starts at $6,995
High-flow catalytic converters
Active valves
Quiet secondary path
Aggressive primary path
HomeLink control
SOUL Sport X-Pipe
Starts at $6,295
High-flow catalytic converters
Fixed/non-valved architecture
Proprietary X-pipe
Quad race resonators
No driver-selectable quiet mode
Both retain catalysts, but they prioritize different characteristics.
VALVED EXHAUST VS. COMPETITION X-PIPE
SOUL Valved Exhaust with Competition Pipes
Starts at $4,995
Catless
Active sound control
Quiet secondary path available
Aggressive valves-open mode
SOUL Competition X-Pipe
Starts at $3,995
Catless
Fixed/non-valved architecture
Quad race resonators
Lower cost
No active quiet mode
For a catless car that still sees regular street or sound-restricted track use, the Valved Exhaust provides considerably more acoustic flexibility.
PERFORMANCE
SOUL designed the 3-inch primary path and available high-flow catalyst / catless configurations to support increased engine output.
However, the current Valved Exhaust product page does not publish a controlled stock-exhaust versus Valved-Exhaust-only dyno comparison.
DasMotoring therefore does not advertise a specific numerical horsepower or torque increase for the system itself.
WEIGHT
SOUL's current Valved Exhaust product page does not publish a verified system weight or factory-to-SOUL weight comparison.
DasMotoring therefore does not advertise a numerical weight-savings figure for this system.
EMISSIONS NOTE
The emissions characteristics of the system depend on the selected catalyst configuration.
Reuse OEM Cats: retains the factory catalytic converters.
Sport Cats: replaces factory catalyst assemblies with aftermarket high-flow catalysts.
Competition: removes the catalytic converters entirely and is intended for competition / off-road use.
Customers are responsible for determining compliance with applicable federal, state, and local regulations.
Product Description
The SOUL X-Pipe Exhaust is a direct bolt-on rear exhaust upgrade for the 2013–2019 Porsche 991.1 and 991.2 911 Turbo / Turbo S, designed for owners who want substantially more flat-six and turbocharger sound while retaining the factory catalytic-converter sections.
SOUL replaces the restrictive factory rear exhaust with a full 3-inch T304L stainless-steel X-pipe system featuring a proprietary exhaust-stream mixing chamber and four straight-through race resonators. The result is increased exhaust volume, stronger turbocharger presence, more pronounced pops and burbles on deceleration, and an OEM-plus character while maintaining the factory catalysts upstream.
The quad race resonators are specifically used to control undesirable cabin resonance without placing conventional restrictive mufflers in the primary exhaust path.
At approximately 16.45 lbs without tips, the SOUL X-Pipe is approximately 8.4 lbs / 3.8 kg lighter than the 24.85-lb factory rear exhaust components it replaces.
Owners may reuse the factory exhaust tips on most Turbo and Turbo S applications or select SOUL's Signature Satin GT2 Style or Signature Satin Straight Cut T316L stainless-steel tips.
FITMENT:
Fits 2013–2016 Porsche 991.1 911 Turbo
Fits 2013–2016 Porsche 991.1 911 Turbo S
Fits 2017–2019 Porsche 991.2 911 Turbo
Fits 2017–2019 Porsche 991.2 911 Turbo S
Fits Coupe and Cabriolet applications where offered
Compatible with factory catalytic-converter sections
Compatible with SOUL Sport Catalytic Converters
Compatible with SOUL Cat Bypass Pipes
Factory exhaust tips may be reused on most applications
Factory tips cannot be reused on the 991.2 Turbo S Exclusive Series
Turbo S Exclusive Series vehicles must use compatible SOUL exhaust tips
DETAILS:
Rear X-Pipe Exhaust System
Retains the vehicle's existing catalytic-converter sections
Full 3-inch exhaust architecture
Proprietary X-pipe mixing chamber
Designed to improve exhaust-stream blending
Designed to reduce rear exhaust restriction
Designed to support higher-output applications
Four straight-through race resonators
Full-metal resonator packing
Engineered to minimize undesirable cabin drone
Increased flat-six exhaust character
Increased turbocharger sound
Increased pops and burbles during deceleration where produced by the ECU calibration
OEM-plus sound character
Approximately 16.45 lbs / 7.5 kg without tips
Factory rear exhaust components approximately 24.85 lbs / 11.3 kg without tips
Saves approximately 8.4 lbs / 3.8 kg
Approximately 34% lighter than the factory components being replaced
Mandrel-bent T304L stainless steel
3-inch diameter tubing
.065-inch wall thickness
Laser-cut mounting brackets
Optional tips manufactured from T316L stainless steel
Mikalor Supra Heavy-Duty clamps included with SOUL tip configurations
Direct bolt-on installation
Installation instructions included
Fixture-tested before shipment
Modular design allows future catalyst-section upgrades
Backed by SOUL Performance Products' Lifetime Warranty for street and track use
RETAINS THE FACTORY CATALYTIC CONVERTERS
Unlike SOUL's Competition and Sport X-Pipe systems, this X-Pipe replaces only the rear exhaust section.
The original catalyst assemblies remain installed.
This allows owners to improve:
Exhaust volume
Exhaust tone
Turbocharger sound
Rear exhaust flow
Exhaust-system weight
without replacing the factory catalytic converters.
For an otherwise-stock car, this makes the X-Pipe the simplest of SOUL's major 991 Turbo exhaust-system upgrades.
FULL 3-INCH EXHAUST ARCHITECTURE
SOUL uses:
3-inch-diameter tubing
through the X-Pipe system.
The larger exhaust path was selected not only for sound but also to provide additional flow capacity for higher-output cars.
This makes the X-Pipe suitable for vehicles with:
ECU tuning
Increased boost
Intake upgrades
Intercooler upgrades
SOUL Sport Catalytic Converters
SOUL Cat Bypass Pipes
Turbocharger upgrades
Other supporting performance modifications
PROPRIETARY X-PIPE MIXING CHAMBER
SOUL developed a dedicated mixing chamber within the X-pipe rather than simply running two isolated exhaust pipes toward the rear of the car.
During development, SOUL analyzed the design in 3D CAD across multiple pressure and temperature conditions and observed a general increase in exhaust velocity downstream of the mixing chamber.
The design is intended to provide:
Improved exhaust-stream blending
Reduced backpressure
Increased downstream exhaust velocity
Higher-flow capability
Smoother exhaust character
Improved sound quality
QUAD RACE RESONATORS
A freer-flowing 3-inch exhaust can easily introduce undesirable low-frequency cabin resonance.
SOUL therefore incorporates:
Four straight-through race resonators
into the X-Pipe.
These use full-metal packing for durability at elevated exhaust temperatures.
The resonators are intended to reduce unwanted frequencies while maintaining a relatively unrestricted primary exhaust path.
This allows the system to provide substantially greater sound without simply becoming an unrefined straight-pipe rear exhaust.
OEM-PLUS SOUND
This X-Pipe is intended to be the more restrained rear-exhaust option within SOUL's 991 Turbo range.
SOUL describes the resulting character as OEM+.
Compared with the stock exhaust, expect:
Increased cold-start presence
Greater flat-six engine note
Stronger turbocharger sound
Increased exhaust volume under acceleration
More audible turbine activity
Increased pops and burbles on deceleration
More high-RPM character
Greater cabin involvement
At steady-state cruising speeds, the quad resonators are designed to keep undesirable drone under control.
TURBOCHARGER SOUND
Even with the original catalytic converters retained, reducing downstream muffling allows more turbocharger sound to reach the driver.
Expect increased:
Turbo spool
Turbine whistle
Throttle-related sound
Boost-related exhaust character
Customers seeking an even greater increase in turbo sound can later pair the X-Pipe with SOUL Sport Catalytic Converters or Cat Bypass Pipes.
DECELERATION POPS & BURBLES
The freer-flowing rear exhaust makes the engine's existing overrun behavior substantially easier to hear.
Expect more audible:
Pops
Crackles
Burbling
Shift-related exhaust events
The amount will depend on:
991.1 vs. 991.2 calibration
Driving mode
ECU software
Catalyst configuration
Other engine modifications
The exhaust itself does not create artificial combustion events.
RETAINS FACTORY CATALYST MONITORING
Because this X-Pipe leaves the factory catalytic converters and their associated emissions-monitoring architecture in place, it does not create the same catalyst-delete concerns as SOUL's Competition X-Pipe.
No ECU calibration is required simply to install the rear X-Pipe.
DasMotoring does not claim that any modification can guarantee the absence of diagnostic faults on every vehicle, but this product does not itself remove the catalysts.
8.4-LB WEIGHT REDUCTION
SOUL's current published weights are:
Factory Rear Exhaust Components:
approximately 24.85 lbs
SOUL X-Pipe Exhaust:
approximately 16.45 lbs
Weight Savings:
approximately 8.4 lbs / 3.8 kg
These measurements are stated without exhaust tips.
That represents approximately a:
34% reduction
in the weight of the rear exhaust components being replaced.
T304L STAINLESS CONSTRUCTION
The main exhaust system is manufactured from:
Mandrel-bent T304L stainless steel
with:
3-inch diameter tubing
and:
.065-inch wall thickness
This provides a balance of:
High-temperature durability
Corrosion resistance
Structural strength
Low mass
Consistent internal geometry
Long service life
FULL-METAL RESONATOR PACKING
SOUL's straight-through resonators use full-metal packing material.
This is particularly appropriate on a turbocharged vehicle because exhaust temperatures can remain elevated during extended high-load or track use.
The construction is intended to provide long-term acoustic performance without significantly obstructing exhaust flow.
LASER-CUT MOUNTING BRACKETS
SOUL uses laser-cut mounting brackets to maintain consistent exhaust positioning.
Each completed system is fixture-tested prior to shipment to verify:
Mounting alignment
X-pipe position
Exhaust-tip positioning
Chassis clearance
Overall dimensional consistency
EXHAUST TIP OPTIONS
Three tip configurations are available.
Reuse OEM Tips
Retains the factory Porsche exhaust outlets for the most factory-like appearance.
Signature Satin GT2 Style Single Wall
A more aggressive motorsport-inspired outlet finished in SOUL's Signature Satin.
Signature Satin Straight Cut Single Wall
A clean straight-cut design for a simple performance appearance.
SOUL's current optional tips are manufactured from T316L stainless steel.
REUSE OEM TIPS
For most Turbo and Turbo S models, the factory tips can be transferred to the SOUL X-Pipe.
This provides:
OEM exterior appearance
Lowest purchase price
No need to purchase additional tip assemblies
Price: $2,995.00
SIGNATURE SATIN GT2 STYLE TIPS
The GT2 Style tips provide a more aggressive visual treatment than the standard Turbo exhaust outlets.
Price: $3,690.00
SIGNATURE SATIN STRAIGHT CUT TIPS
The Straight Cut tips provide a clean, motorsport-inspired appearance.
Price: $3,690.00
TURBO S EXCLUSIVE SERIES NOTE
The 991.2 Turbo S Exclusive Series cannot reuse its original factory exhaust tips with the SOUL X-Pipe.
Exclusive Series customers must select:
Signature Satin GT2 Style Single Wall
or
Signature Satin Straight Cut Single Wall
Do not order the OEM-tip configuration for an Exclusive Series vehicle.
MODULAR EXHAUST ARCHITECTURE
One of the strongest advantages of the SOUL 991 Turbo exhaust family is its modularity.
An owner can initially install the rear X-Pipe while retaining the factory catalysts and later add:
SOUL Sport Catalytic Converters
or
SOUL Cat Bypass Pipes
without replacing the rear exhaust again.
This allows the exhaust to evolve with the vehicle.
X-PIPE + FACTORY CATALYSTS
This configuration provides the most conservative SOUL X-Pipe setup.
Factory Cats + SOUL X-Pipe
Retains factory catalytic converters
Increases rear exhaust flow
Increases flat-six sound
Increases turbo sound
Saves approximately 8.4 lbs
Retains a comparatively OEM-plus character
No catalyst removal
This is particularly appropriate for an otherwise-stock or mildly modified street car.
X-PIPE + SOUL SPORT CATALYTIC CONVERTERS
Adding SOUL Sport Catalytic Converters converts the rear X-Pipe configuration into a substantially more comprehensive catted exhaust system.
Benefits include:
Reduced catalyst restriction
Increased turbocharger sound
Increased overall exhaust volume
Greater performance potential
Retained catalytic converters
This effectively moves the vehicle toward the hardware configuration represented by SOUL's complete Sport X-Pipe system.
X-PIPE + SOUL CAT BYPASS PIPES
The X-Pipe can also be paired with SOUL Cat Bypass Pipes.
This produces a much more aggressive configuration with:
No catalytic converters
Significantly increased turbo sound
Reduced post-turbo restriction
Greater exhaust volume
Additional weight reduction
Greater emissions and diagnostic considerations
This effectively moves the vehicle toward SOUL's Competition X-Pipe hardware configuration.
X-PIPE VS. SPORT X-PIPE
SOUL X-Pipe Exhaust
Starts at $2,995
Rear exhaust only
Retains existing catalysts
3-inch architecture
Proprietary X-pipe
Quad race resonators
Saves approximately 8.4 lbs
Lowest-cost X-pipe configuration
OEM-plus sound character
SOUL Sport X-Pipe
Starts at $6,295
Includes high-flow catalytic converters
3-inch architecture
Proprietary X-pipe
Quad race resonators
Saves approximately 14.4 lbs
Greater turbocharger sound
More comprehensive catted exhaust upgrade
X-PIPE VS. COMPETITION X-PIPE
SOUL X-Pipe Exhaust
Starts at $2,995
Retains factory catalysts
Approximately 16.45 lbs without tips
Approximately 8.4 lbs lighter than stock rear components
More restrained OEM-plus sound
Street-oriented starting point
SOUL Competition X-Pipe
Starts at $3,995
Completely catless
Approximately 26 lbs as a complete catless system
Approximately 19 lbs lighter than corresponding factory components
Greater turbocharger sound
Greater exhaust volume
Greater emissions and diagnostic considerations
Competition-oriented configuration
PERFORMANCE
SOUL designed the X-Pipe around improved exhaust flow and the ability to support increased engine output.
However, SOUL's current product page does not publish a controlled stock-rear-exhaust versus X-Pipe-only horsepower or torque test.
DasMotoring therefore does not advertise a specific numerical power increase from the rear X-Pipe alone.
Product Description
The SOUL Sport X-Pipe Exhaust System is a complete catted performance exhaust system for the Porsche 991.1 and 991.2 911 Turbo / Turbo S, engineered to increase exhaust flow, turbocharger sound, flat-six character, and performance potential while retaining high-flow catalytic converters and refined street manners.
SOUL combines large-diameter 3-inch T304L stainless-steel tubing, upgraded high-flow catalytic converters, a proprietary X-pipe mixing chamber, and four straight-through race resonators into a complete turbo-back exhaust solution.
The upgraded catalysts reduce post-turbo restriction while allowing substantially more turbocharger and engine sound to pass through the exhaust. Farther downstream, SOUL's X-pipe blends the exhaust streams from both cylinder banks, while quad race resonators target undesirable frequencies and help maintain comfortable cruising behavior.
Compared with the roughly 45-lb factory exhaust components, the SOUL Sport X-Pipe weighs approximately 30.6 lbs, reducing rear exhaust-system mass by approximately 14.4 lbs / 6.5 kg.
For customers wanting improved flow and sound while retaining catalytic converters, the Sport X-Pipe provides a more street-oriented alternative to SOUL's catless Competition X-Pipe.
FITMENT:
Fits Porsche 991.1 911 Turbo
Fits Porsche 991.1 911 Turbo S
Fits Porsche 991.2 911 Turbo
Fits Porsche 991.2 911 Turbo S
SOUL specifies compatibility across the 2013–2019 991 Turbo platform
Fits Coupe and Cabriolet applications where offered
Compatible with factory exhaust tips on most applications
Factory exhaust tips cannot be reused on the 991.2 Turbo S Exclusive Series
Turbo S Exclusive Series vehicles must use compatible SOUL exhaust tips
Compatible with PDK-equipped Turbo / Turbo S applications
DETAILS:
Complete catted Sport X-Pipe Exhaust System
Replaces the factory catalyst and rear exhaust sections
Retains a catted exhaust configuration
Premium high-flow catalytic converters
Designed for increased performance without catalyst-related check engine lights under normal operating conditions
Full 3-inch exhaust architecture
Proprietary X-pipe mixing chamber
X-pipe blends exhaust from opposing cylinder banks
Designed to increase exhaust-gas velocity downstream of the mixing chamber
Designed to reduce exhaust backpressure
Designed to support higher-output engine configurations
Four straight-through race resonators
Full-metal resonator packing for high-temperature durability
Resonators help suppress unwanted cabin drone
Increased turbocharger spool and turbine sound
Increased flat-six exhaust character
Increased pops and burbles during deceleration where produced by the vehicle calibration
Aggressive sound under heavy throttle
Mild, sporty exhaust presence during cruising
SOUL system weighs approximately 30.6 lbs / 13.9 kg
Factory exhaust components weigh approximately 45 lbs / 20.4 kg
Saves approximately 14.4 lbs / 6.5 kg
Approximately 32% lighter than the corresponding factory exhaust components
Main exhaust manufactured from mandrel-bent T304L stainless steel
3-inch tubing
.065-inch wall thickness
Straight-through race resonators
Laser-cut mounting brackets
Optional SOUL exhaust tips manufactured from T316L stainless steel
Direct bolt-on installation
Installation instructions included
Fixture-tested before shipment
Foam-packed following final inspection
Modular exhaust architecture
Backed by SOUL Performance Products' Lifetime Warranty for street and track use
COMPLETE CATTED PERFORMANCE EXHAUST
Unlike SOUL's standalone rear X-Pipe Exhaust, the Sport X-Pipe is a complete system that also replaces the factory catalytic-converter sections.
Unlike the Competition X-Pipe, however, it retains catalytic converters.
This gives the Sport system a useful middle ground between the factory exhaust and a fully catless competition configuration.
The package addresses:
Factory catalyst restriction
Rear exhaust restriction
Exhaust-stream separation
Turbocharger sound attenuation
Excess rear exhaust-system weight
Unwanted exhaust resonance
while still maintaining catalytic converters.
HIGH-FLOW CATALYTIC CONVERTERS
The factory catalytic converters sit directly downstream of the turbochargers and create a meaningful restriction in the exhaust system.
SOUL replaces these sections with large, high-flow catalyst assemblies intended to increase available exhaust flow while maintaining catalyst functionality.
Benefits include:
Reduced post-turbo restriction
Increased exhaust-flow capacity
Increased turbocharger sound
Stronger exhaust character
Increased performance potential
Retained catalytic converters
Reduced diagnostic concerns compared with catless exhaust systems
SOUL specifically developed this system around providing additional performance without catalyst-related check engine lights under normal conditions.
NO PUBLISHED CURRENT CATALYST CELL COUNT
SOUL's current product information describes the system as using upgraded, high-flow catalytic converters but does not currently publish a catalyst cell count or identify a specific catalyst supplier.
DasMotoring therefore does not advertise a catalyst cell count for current-production systems.
FULL 3-INCH EXHAUST ARCHITECTURE
SOUL selected:
3-inch-diameter tubing
because supporting increased power was a major goal of the system.
The larger exhaust path provides additional capacity for:
Factory turbochargers
ECU tuning
Increased boost pressure
Intake upgrades
Intercooler upgrades
Turbocharger upgrades
Higher-output engine builds
This makes the Sport X-Pipe appropriate not only for otherwise-stock vehicles but also for cars expected to receive additional performance modifications.
PROPRIETARY X-PIPE MIXING CHAMBER
SOUL developed a purpose-built mixing chamber within the X-pipe rather than simply keeping the two exhaust banks separated.
During development, SOUL used 3D CAD analysis across a range of pressure and temperature conditions and observed a general increase in exhaust velocity downstream of the mixing chamber.
The resulting architecture is intended to improve:
Exhaust-stream blending
Exhaust velocity
Flow characteristics
Backpressure reduction
High-power exhaust capacity
Sound quality
The X-pipe also gives the Turbo a more cohesive flat-six exhaust tone than a completely isolated dual-exhaust arrangement.
QUAD STRAIGHT-THROUGH RACE RESONATORS
Increasing exhaust flow and removing factory muffling can easily introduce undesirable cabin resonance.
SOUL therefore incorporates:
Four straight-through race resonators
into the Sport X-Pipe system.
The resonators use a full-metal packing design intended to withstand sustained high exhaust temperatures.
They help:
Reduce cabin drone
Smooth undesirable frequencies
Refine exhaust tone
Preserve comfortable cruising behavior
without forcing the main exhaust stream through highly restrictive conventional mufflers.
SOPHISTICATED STREET SOUND
SOUL designed the Sport X-Pipe to provide a more mature increase in sound than its catless Competition X-Pipe.
During normal cruising, expect:
Mild but clearly increased exhaust presence
More audible turbocharger activity
Refined flat-six tone
Minimal undesirable drone
Comfortable long-distance operation
Under heavier throttle, the character becomes substantially more aggressive.
Expect:
Greater exhaust volume
Strong turbo wail
Increased flat-six presence
Sharper high-RPM character
Increased pops and burbles during deceleration
More dramatic throttle-related sound
The Sport X-Pipe is intended to provide a meaningful sound upgrade without making the car excessively loud during normal cruising.
TURBOCHARGER SOUND
High-flow catalytic converters allow more of the turbochargers' natural sound to pass downstream.
Compared with the factory exhaust, expect more:
Turbo spool
Turbine whistle
Turbocharger mechanical character
Throttle-related feedback
Exhaust texture under boost
The combination of reduced catalyst restriction and freer rear exhaust architecture makes the turbocharged nature of the 991 Turbo considerably more apparent.
DECELERATION POPS & BURBLES
SOUL specifically notes increased pops and burbles during throttle lift and deceleration.
The exhaust itself does not manufacture artificial combustion events.
Instead, the freer-flowing catalyst and exhaust architecture allows more of the engine calibration's existing overrun behavior to be heard.
Driving mode, ECU calibration, and other engine modifications will influence the amount of this behavior.
NO CHECK ENGINE LIGHT DESIGN INTENT
One of the primary differences between this system and the Competition X-Pipe is retention of high-flow catalytic converters.
SOUL specifically developed the Sport X-Pipe to provide:
Added performance without a check engine light.
DasMotoring treats this as the manufacturer's intended operating behavior rather than an unconditional guarantee for every modified or high-mileage vehicle.
Diagnostic behavior can still be influenced by:
Oxygen-sensor condition
ECU software
Vehicle condition
Additional modifications
Catalyst condition
NO ECU TUNE REQUIRED
SOUL does not specify ECU calibration as a requirement for installing the Sport X-Pipe.
The system is designed to operate as a bolt-on hardware upgrade.
An ECU tune may provide additional performance by taking advantage of the increased exhaust-flow capacity, but one is not required simply to install the system.
MODULAR EXHAUST ARCHITECTURE
SOUL intentionally designed the 991 Turbo exhaust family around modularity.
The Sport X-Pipe allows owners to later:
Change exhaust-tip styles
Return to factory catalytic-converter sections
Convert to SOUL catless sections
This allows the exhaust configuration to evolve with the vehicle rather than requiring replacement of the entire system.
14.4-LB WEIGHT REDUCTION
SOUL publishes the following weights:
Factory Exhaust Components:
Approximately 45 lbs / 20.4 kg
SOUL Sport X-Pipe Exhaust:
Approximately 30.6 lbs / 13.9 kg
Weight Savings:
Approximately 14.4 lbs / 6.5 kg
That represents approximately a:
32% reduction
in the weight of the exhaust components being replaced.
Because this mass is concentrated at the rear of the 911, reducing it is particularly desirable.
T304L STAINLESS CONSTRUCTION
The main exhaust is constructed from:
Mandrel-bent T304L stainless steel
with:
3-inch diameter tubing
and:
.065-inch wall thickness
This provides a balance of:
High-temperature durability
Corrosion resistance
Structural strength
Relatively low weight
Consistent exhaust geometry
Long-term reliability
FULL-METAL RESONATOR PACKING
SOUL uses straight-through race resonators with full-metal packing rather than conventional packing materials that may degrade more quickly under sustained high exhaust temperatures.
This is particularly appropriate for a turbocharged application where exhaust-system temperatures can remain elevated during repeated high-load use.
LASER-CUT BRACKETS
The exhaust incorporates laser-cut brackets for consistent mounting geometry.
Each system is built and checked in a dedicated fixture prior to shipment to help ensure correct:
Exhaust alignment
Tip positioning
Catalyst positioning
Chassis clearance
Mounting-point geometry
EXHAUST TIP OPTIONS
Three configurations are currently available.
Reuse OEM Tips
Retains the original Porsche exhaust outlets for the most factory-like rear appearance.
Signature Satin Straight Cut Single Wall
A clean motorsport-inspired straight outlet manufactured from T316L stainless steel and finished in SOUL's Signature Satin.
Signature Satin GT2 Style Single Wall
A more aggressive T316L stainless-steel outlet inspired by Porsche GT2-style exhaust geometry.
REUSE OEM TIPS
The standard configuration allows most 991 Turbo and Turbo S owners to retain their existing Porsche exhaust tips.
Benefits include:
OEM exterior appearance
Lowest package price
No need to purchase additional tip hardware
Price: $6,295.00
SIGNATURE SATIN STRAIGHT CUT SINGLE WALL
SOUL's Straight Cut tips provide a simple and clean motorsport-style finish.
Price: $6,895.00
SIGNATURE SATIN GT2 STYLE SINGLE WALL
The GT2 Style tips provide a more aggressive visual appearance inspired by Porsche's GT-oriented exhaust designs.
Price: $6,895.00
TURBO S EXCLUSIVE SERIES NOTE
The 991.2 Turbo S Exclusive Series cannot reuse its original factory exhaust tips with this system.
Exclusive Series customers must select either:
Signature Satin Straight Cut Single Wall
or
Signature Satin GT2 Style Single Wall
This fitment restriction should be confirmed before fulfilling the order.
SPORT X-PIPE VS. COMPETITION X-PIPE
SOUL Sport X-Pipe
Starts at $6,295
Retains high-flow catalytic converters
Full 3-inch architecture
Proprietary X-pipe mixing chamber
Quad race resonators
Approximately 30.6 lbs
Saves approximately 14.4 lbs
Developed for catalyst-related CEL-free operation
Sophisticated increase in sound
Better suited to street-driven vehicles
SOUL Competition X-Pipe
Starts at $3,995
Completely catless
Full 3-inch architecture
Proprietary X-pipe mixing chamber
Quad race resonators
Approximately 26 lbs
Saves approximately 19 lbs
Greater turbocharger sound
Greater exhaust volume
Greater diagnostic and emissions considerations
More competition-oriented configuration
The Sport X-Pipe sacrifices approximately 4.6 lbs of additional weight savings compared with the Competition system in exchange for retaining catalytic converters.
SPORT X-PIPE VS. REAR X-PIPE EXHAUST
SOUL's standalone rear X-Pipe Exhaust retains the vehicle's existing factory catalytic converters.
The Sport X-Pipe instead includes upgraded high-flow catalytic-converter sections as part of the complete package.
Sport X-Pipe
High-flow catalysts included
Complete catted exhaust system
Addresses catalyst and rear exhaust restriction
Greater turbocharger sound than retaining factory catalysts
Approximately 14.4 lbs lighter than the corresponding factory system
Rear X-Pipe Exhaust
Retains existing factory catalyst sections
Lower purchase price
Rear-exhaust upgrade only
Approximately 8.4 lbs lighter than the factory rear exhaust components
The Sport X-Pipe is the more comprehensive catted performance system.
PERFORMANCE
SOUL designed the 3-inch piping, high-flow catalysts, and X-pipe architecture to improve flow and support substantial horsepower.
However, SOUL's current product page does not provide a controlled stock-exhaust versus Sport X-Pipe dyno comparison.
DasMotoring therefore does not advertise a specific horsepower or torque gain for this product alone.
EMISSIONS NOTE
The Sport X-Pipe retains catalytic converters but replaces the factory Porsche catalyst assemblies with aftermarket high-flow components.
The system is not represented here as an original-equipment emissions component.
Customers are responsible for determining whether their vehicle and complete exhaust configuration comply with applicable federal, state, and local regulations.
Product Description
The SOUL Competition X-Pipe Exhaust System is a complete catless performance exhaust system for the Porsche 991.1 and 991.2 911 Turbo / Turbo S, engineered for maximum exhaust flow, substantial weight reduction, increased turbocharger sound, and a dramatically more aggressive flat-six exhaust note.
SOUL developed the Competition system around full 3-inch T304L stainless-steel piping, a proprietary X-pipe mixing chamber, and four straight-through race resonators. The X-pipe blends the opposing exhaust streams to improve flow characteristics and produce a smoother, more refined exhaust note, while the quad resonators reduce undesirable drone without introducing the restriction of conventional mufflers.
The Competition configuration removes the factory catalytic converters, substantially reducing post-turbo exhaust restriction and allowing significantly more turbocharger and engine sound to reach the driver.
At approximately 26 lbs, the SOUL Competition X-Pipe weighs approximately 19 lbs / 8.6 kg less than the roughly 45-lb factory exhaust components it replaces.
Owners may reuse the factory exhaust tips on most Turbo and Turbo S applications or select SOUL's Signature Satin Straight Cut or Signature Satin GT2 Style T316L stainless-steel tips.
FITMENT:
Fits 2013–2016 Porsche 991.1 911 Turbo
Fits 2013–2016 Porsche 991.1 911 Turbo S
Fits 2017–2019 Porsche 991.2 911 Turbo
Fits 2017–2019 Porsche 991.2 911 Turbo S
Fits 2018 Porsche 991.2 911 Turbo S Exclusive Series when equipped with compatible SOUL exhaust tips
SOUL specifies fitment for all 991.1 and 991.2 Turbo / Turbo S vehicles
Factory exhaust tips may be reused on most applications
Factory tips cannot be reused on the 911 Turbo S Exclusive Series
Compatible with PDK-equipped Turbo / Turbo S applications
DETAILS:
Complete Competition X-Pipe Exhaust System
Completely catless
Removes the factory catalytic converters
Removes the restrictive factory rear exhaust components
Full 3-inch exhaust piping
Proprietary X-pipe mixing-chamber design
Designed to reduce post-turbo backpressure
Designed to support high-horsepower applications
Four straight-through race resonators
Full-metal resonator packing for high-temperature durability
Race resonators help reduce undesirable drone
Increased turbocharger spool and turbine sound
Increased flat-six exhaust volume
Increased pops and burbles during deceleration
Non-valved performance architecture
Approximately 26 lbs / 11.8 kg system weight
Factory exhaust components approximately 45 lbs / 20.4 kg
Approximately 19 lbs / 8.6 kg of weight savings
Approximately 42% lighter than the factory components being replaced
Main exhaust constructed from mandrel-bent T304L stainless steel
3-inch diameter
.065-inch wall thickness
Laser-cut mounting brackets
Optional SOUL tips manufactured from T316L stainless steel
Mikalor Supra Heavy-Duty clamps included with applicable SOUL tip configurations
Direct bolt-on installation
Installation instructions included
Fixture-tested before shipment
Foam-packed following final inspection
Designed and manufactured by SOUL Performance Products
Backed by SOUL's Lifetime Warranty for street and track use
COMPLETE CATLESS COMPETITION EXHAUST
The Competition X-Pipe is considerably more aggressive than a conventional rear muffler replacement.
This system removes the factory catalytic converters as part of the complete exhaust configuration.
Eliminating the catalysts reduces one of the largest restrictions immediately downstream of the turbochargers and provides:
Reduced post-turbine backpressure
Greater exhaust-flow capacity
Increased turbocharger sound
Greater engine character
Increased tuning potential
Reduced exhaust-system weight
Significantly increased overall volume
This is SOUL's competition-oriented configuration for owners prioritizing flow, sound, and performance rather than emissions equipment retention.
FULL 3-INCH EXHAUST ARCHITECTURE
Supporting increased power was a major consideration during SOUL's development process.
The system therefore uses:
3-inch-diameter exhaust tubing
through the performance exhaust architecture.
This large flow path helps accommodate the exhaust mass flow associated with:
Factory turbochargers
ECU tuning
Increased boost
Intake upgrades
Intercooler upgrades
Turbocharger upgrades
Higher-output engine combinations
The 3-inch architecture makes the system particularly appropriate for vehicles expected to progress beyond stock output.
PROPRIETARY X-PIPE DESIGN
SOUL experimented with a mixing chamber during development of the 991 Turbo exhaust.
Using 3D CAD analysis across a range of pressure and temperature conditions, SOUL observed a general increase in exhaust velocity downstream of its mixing chamber.
The resulting proprietary X-pipe is designed to provide:
Improved exhaust-stream blending
Reduced backpressure
Improved exhaust velocity
Greater high-horsepower flow capacity
Smoother exhaust character
Improved sound quality
Rather than keeping the left and right banks completely isolated, the X-pipe allows the two exhaust streams to interact before exiting the vehicle.
QUAD RACE RESONATORS
A completely catless 3-inch Turbo exhaust can easily become excessively harsh or develop objectionable cabin resonance.
SOUL therefore incorporates:
Four straight-through race resonators
into the Competition X-Pipe.
The resonators use a full-metal packing design selected for durability under sustained high exhaust temperatures.
Their purpose is to reduce undesirable frequencies without significantly restricting the primary exhaust path.
This helps provide:
Reduced drone
Smoother overall sound
More refined exhaust character
Straight-through exhaust flow
High-temperature durability
The Competition system remains a very aggressive exhaust, but the resonators prevent it from simply becoming an uncontrolled straight-pipe configuration.
NON-VALVED PERFORMANCE DESIGN
The Competition X-Pipe is a non-valved exhaust system.
It does not provide a dedicated valves-closed quiet route like SOUL's Valved Exhaust System.
The freer-flowing Competition exhaust path is therefore active continuously.
Vehicle drive modes can still affect engine behavior, throttle calibration, transmission behavior, and factory-generated burbles, but they do not convert this exhaust into a separate quiet flow path.
Customers wanting active exhaust-volume control should consider SOUL's Valved Exhaust System instead.
SOUND CHARACTER
SOUL developed the Competition X-Pipe to deliver significantly more of the 991 Turbo's engine and turbocharger character.
Expect:
Dramatically increased exhaust volume
Significantly more turbo spool
More audible turbine sound
Greater flat-six presence
Stronger full-throttle character
Increased acceleration sound
More aggressive high-RPM exhaust note
Pronounced crackles during throttle lift
Increased burbles during deceleration
More exhaust presence inside the cabin
Despite the increased volume, SOUL specifically engineered the quad race resonators to keep the tone refined rather than excessively harsh.
COMFORT MODE BEHAVIOR
SOUL notes that the vehicle's Comfort-oriented calibration reduces the amount of burbling and crackling compared with more aggressive driving modes.
This provides some variation in character through the vehicle's engine and transmission programming even though the Competition X-Pipe itself is not valved.
The exhaust will remain considerably more audible than stock in all modes.
TURBOCHARGER SOUND
Removing the factory catalytic converters makes a substantial difference in audible turbocharger activity.
The catalyst substrates normally suppress much of the:
Turbo spool
Turbine whistle
Mechanical turbocharger character
before those sounds reach the rear of the vehicle.
The Competition X-Pipe removes that attenuation, allowing substantially more turbocharger sound to reach the cabin and surrounding environment.
POST-TURBO BACKPRESSURE REDUCTION
Reducing restriction after a turbocharger can improve the environment into which the turbine discharges.
The Competition system removes the factory catalyst substrates and replaces the restrictive factory exhaust architecture with large 3-inch piping.
This provides additional exhaust-flow capacity for both stock and modified cars.
The benefit becomes increasingly important as:
Boost pressure increases
Airflow increases
Engine output increases
Turbochargers are upgraded
DYNO-TESTED HIGH-POWER CAPABILITY
SOUL performed third-party Mustang Dyno testing at R/T Tuning with the Competition X-Pipe already installed.
The vehicle produced:
542 whp / 629 lb-ft
with the SOUL Competition X-Pipe and baseline calibration.
Adding a:
COBB Accessport base map
increased output to approximately:
581 whp / 733 lb-ft
A subsequent:
Custom Protune
produced approximately:
606 whp / 749 lb-ft
These results demonstrate the Competition X-Pipe's ability to support substantial power and torque as ECU calibration becomes more aggressive.
IMPORTANT DYNO CONTEXT
The published dyno session is not an exhaust-only before-and-after test.
The SOUL Competition X-Pipe was already installed for the 542 whp / 629 lb-ft baseline pull.
The progression was:
SOUL Competition X-Pipe + baseline calibration:
542 whp / 629 lb-ft
SOUL Competition X-Pipe + COBB base map:
581 whp / 733 lb-ft
SOUL Competition X-Pipe + custom Protune:
606 whp / 749 lb-ft
The data therefore demonstrates that the exhaust can support a high-output tuned configuration, but it does not establish a standalone horsepower or torque gain from the exhaust itself.
DasMotoring does not advertise a numerical Competition X-Pipe-only horsepower gain.
ECU TUNING
An ECU tune is not required for the exhaust system to physically bolt onto the vehicle.
However, because the Competition system removes the factory catalytic converters, catalyst-monitoring faults are likely.
An appropriate closed-course ECU calibration can:
Address catalyst-related diagnostic faults
Take greater advantage of reduced exhaust restriction
Optimize higher boost targets
Support additional airflow modifications
Improve overall tuned performance
CHECK ENGINE LIGHT
Because the Competition X-Pipe removes the catalytic converters, SOUL states that a check engine light is likely on a vehicle retaining normal catalyst monitoring.
This distinguishes the Competition system from SOUL's catted Sport X-Pipe Exhaust System.
Customers using the Competition exhaust on a closed-course vehicle should plan accordingly when determining the vehicle's calibration.
19-LB WEIGHT REDUCTION
SOUL publishes the following weights:
Factory Exhaust Components:
Approximately 45 lbs / 20.4 kg
SOUL Competition X-Pipe Exhaust:
Approximately 26 lbs / 11.8 kg
Weight Savings:
Approximately 19 lbs / 8.6 kg
That represents approximately a:
42% reduction
in the mass of the components being replaced.
Because the majority of this exhaust hardware sits behind the rear axle, the reduction is particularly useful on a rear-engined 911.
T304L STAINLESS EXHAUST CONSTRUCTION
The main exhaust assembly is manufactured from:
Mandrel-bent T304L stainless steel
with:
3-inch diameter tubing
and:
.065-inch wall thickness
This construction provides:
High-temperature durability
Corrosion resistance
Structural strength
Consistent exhaust geometry
Long service life
Suitability for repeated track use
T316L STAINLESS-STEEL EXHAUST TIPS
SOUL's current optional exhaust tips are manufactured from T316L stainless steel.
T316L provides excellent corrosion resistance and is well suited to visible exhaust components exposed to:
Heat
Condensation
Road debris
Moisture
Environmental contamination
Customers may alternatively retain the factory exhaust tips where compatible.
TIP OPTIONS
Three configurations are currently available:
Reuse OEM Tips
Retains the factory Porsche exhaust outlets for an OEM exterior appearance.
Signature Satin Straight Cut Single Wall
A clean motorsport-inspired straight-cut design finished in SOUL's Signature Satin.
Signature Satin GT2 Style Single Wall
A more aggressive outlet inspired by Porsche's GT2-style exhaust appearance.
911 TURBO S EXCLUSIVE SERIES
The 911 Turbo S Exclusive Series cannot reuse its factory exhaust tips with this system.
Exclusive Series customers must select one of SOUL's compatible tip configurations:
Signature Satin Straight Cut Single Wall
Signature Satin GT2 Style Single Wall
This restriction should be confirmed when ordering for an Exclusive Series vehicle.
MIKALOR SUPRA HEAVY-DUTY CLAMPS
SOUL supplies Mikalor Supra Heavy-Duty clamps to secure its optional exhaust tips.
These clamps provide:
High clamping force
Durable stainless-steel construction
Secure tip retention
Adjustability during installation
DIRECT BOLT-ON INSTALLATION
The Competition X-Pipe is designed as a direct bolt-on system.
Each assembly is:
Manufactured in dedicated fixtures
Test-fitted for dimensional consistency
Quality inspected
Foam packed before shipment
Detailed installation instructions are included.
No cutting or welding is required as part of normal installation.
COMPETITION X-PIPE VS. SPORT X-PIPE
Competition X-Pipe
Starts at $3,995
Completely catless
Full 3-inch architecture
Quad race resonators
Approximately 26 lbs
Saves approximately 19 lbs
Maximum turbo sound
Maximum exhaust volume
Greater catalyst-related diagnostic considerations
Competition-oriented configuration
Sport X-Pipe
Retains performance catalytic converters
Full performance X-pipe architecture
Quad race resonators
More street-oriented
Lower likelihood of catalyst-related diagnostic faults
More exhaust-system weight due to catalysts
Higher purchase price
The Competition X-Pipe is the more aggressive choice for vehicles where retaining catalytic converters is not required.
COMPETITION X-PIPE VS. REAR X-PIPE EXHAUST
SOUL also offers a standalone rear X-Pipe Exhaust that retains the existing catalyst assemblies.
The Competition X-Pipe differs by combining the freer-flowing rear exhaust architecture with catalyst removal.
This provides:
Greater overall exhaust-flow potential
Greater turbocharger sound
Greater weight reduction
More aggressive exhaust character
while introducing the emissions and diagnostic considerations associated with removing the factory catalytic converters.
EMISSIONS / COMPETITION USE NOTE
The SOUL Competition X-Pipe Exhaust System removes the factory catalytic converters.
This product is not CARB certified and SOUL specifies it for off-road / competition use only.
Use on emissions-controlled vehicles operated on public roads may violate applicable federal, state, or local regulations.
Customers are responsible for determining the legality of their vehicle configuration and intended use.
No results found
No results match your search. Try removing a few filters.

