Porsche 991.1 / 991.2 Turbo / Turbo S SOUL Valved Exhaust System

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.