Porsche 991.2 Carrera Base / S Without PSE SOUL Sport Catalytic Converters

Product Description

The SOUL Sport Catalytic Converters are a direct bolt-on performance upgrade for 2017–2019 Porsche 991.2 Carrera Base and Carrera S models without Porsche Sport Exhaust / PSE, replacing the restrictive factory catalytic converters with premium high-flow catalysts designed to increase exhaust flow, throttle response, turbocharger sound, and overall engine character.

Located immediately downstream of the turbochargers, the factory catalytic converters represent a significant restriction in the 991.2 Carrera exhaust system. SOUL's higher-flow catalyst assemblies reduce that restriction while maintaining a catted exhaust configuration, providing a more street-oriented alternative to completely catless bypass pipes.

SOUL specifically developed these Sport Catalytic Converters to provide additional performance and sound without catalyst-related check engine lights under normal operating conditions, while retaining Porsche's original turbocharger heat shields and factory-style fitment.

FITMENT:

• Fits 2017–2019 Porsche 991.2 911 Carrera Coupe without PSE

• Fits 2017–2019 Porsche 991.2 911 Carrera Cabriolet without PSE

• Fits 2017–2019 Porsche 991.2 911 Carrera 4 Coupe without PSE

• Fits 2017–2019 Porsche 991.2 911 Carrera 4 Cabriolet without PSE

• Fits applicable 2017–2019 Porsche 991.2 911 Targa 4 without PSE

• Fits 2017–2019 Porsche 991.2 911 Carrera S Coupe without PSE

• Fits 2017–2019 Porsche 991.2 911 Carrera S Cabriolet without PSE

• Fits 2017–2019 Porsche 991.2 911 Carrera 4S Coupe without PSE

• Fits 2017–2019 Porsche 991.2 911 Carrera 4S Cabriolet without PSE

• Fits applicable 2017–2019 Porsche 991.2 911 Targa 4S without PSE

• Designed specifically for vehicles without Porsche Sport Exhaust / PSE

• Compatible with manual and PDK transmissions where applicable

• Compatible with the factory rear exhaust

• Compatible with SOUL Performance Exhaust Systems for non-PSE vehicles

• Compatible with SOUL Valved Exhaust Package architecture where applicable

• Compatible with SOUL Sport Headers

DETAILS:

• Pair of high-flow Sport Catalytic Converters

• Designed specifically for non-PSE 991.2 Carrera applications

• Replaces the restrictive factory catalyst assemblies

• Retains a catted exhaust configuration

• Premium high-flow catalyst elements

• Designed to increase exhaust flow

• Designed to improve throttle response

• Increases audible turbocharger sound

• Increases overall exhaust character

• Developed to operate without catalyst-related check engine lights under normal conditions

• Retains the original Porsche turbocharger heat shields

• Constructed from mandrel-bent .065-inch-wall T304L stainless steel

• Back-purged TIG welded

• Fixture-tested prior to shipment

• Direct bolt-on installation

• No PSE hardware required

• No tip variants

• No transmission variants

• No catalyst variants

• Designed and manufactured in-house by SOUL Performance Products

• Backed by SOUL Performance Products' Lifetime Warranty for street and track use

HIGH-FLOW CATALYTIC CONVERTERS

The factory catalytic converters sit directly downstream of the turbochargers and must process the entire exhaust flow leaving the turbine outlets.

While necessary for the original emissions system, the factory assemblies also introduce post-turbo exhaust restriction.

SOUL replaces them with premium high-flow catalytic converters designed to reduce that restriction while retaining catalyst functionality.

Potential benefits include:

• Increased exhaust-flow capacity

• Improved throttle response

• Increased turbocharger sound

• Stronger exhaust character

• Greater performance potential

• Retention of catalytic converters

• Reduced diagnostic concerns compared with completely catless pipes

REDUCED POST-TURBO RESTRICTION

Reducing restriction after the turbochargers is particularly useful on a turbocharged engine.

The turbine must discharge exhaust gases into the downstream exhaust system after extracting energy to drive the compressor.

Reducing this post-turbine restriction can improve the overall efficiency of the exhaust path and provide additional flow capacity as engine output increases.

The SOUL Sport Catalytic Converters address this restriction without completely eliminating the catalysts.

INCREASED THROTTLE RESPONSE

SOUL specifically identifies improved throttle response as one of the benefits of the Sport Catalytic Converters.

Reducing post-turbo restriction allows the engine to respond more freely to changes in throttle demand.

The effect can become increasingly useful when the vehicle is combined with:

• ECU tuning

• SOUL Sport Headers

• SOUL Performance Exhaust

• Higher boost targets

• Other airflow-related modifications

INCREASED TURBOCHARGER SOUND

The freer-flowing catalysts allow more of the turbochargers' acoustic character to pass through the exhaust system.

Expect more:

• Turbo spool

• Turbo whistle

• Turbine sound

• Throttle-related acoustic feedback

• Exhaust texture under load

The change is especially noticeable when paired with a freer-flowing rear exhaust.

EXHAUST SOUND

Compared with the factory catalyst assemblies, the SOUL Sport Catalytic Converters allow more of the 3.0L turbocharged flat-six exhaust character to reach the rear exhaust.

Expect:

• Increased turbocharger presence

• Stronger acceleration sound

• Greater exhaust texture

• More audible engine character under load

• Increased response to throttle input

• Additional exhaust presence without moving to a completely catless configuration

Overall volume will depend heavily on the rear exhaust installed behind the catalysts.

DESIGNED FOR CEL-FREE OPERATION

One of SOUL's primary development goals was to increase exhaust flow without causing the catalyst-efficiency faults commonly associated with completely catless exhaust components.

SOUL specifically markets these Sport Catalytic Converters as providing:

Added performance without a check engine light.

For customer-facing purposes, it is still sensible to describe this as the intended operating behavior rather than an unconditional guarantee for every modified vehicle.

Diagnostic behavior can be influenced by:

• Oxygen-sensor condition

• ECU software

• Vehicle condition

• Additional modifications

• Catalyst condition over time

NO ECU TUNE REQUIRED FOR NORMAL INSTALLATION

SOUL does not specify an ECU calibration as a requirement for installation of these Sport Catalytic Converters.

They are intended to function as a bolt-on hardware upgrade on otherwise-compatible non-PSE vehicles.

An ECU tune may still provide additional performance benefits by taking advantage of the greater available exhaust-flow capacity.

RETAINS FACTORY TURBO HEAT SHIELDS

SOUL specifically designed the Sport Catalytic Converters to retain Porsche's original turbocharger heat shields.

This maintains the factory thermal-protection strategy around:

• Turbochargers

• Wiring

• Hoses

• Engine-bay components

• Adjacent heat-sensitive hardware

This is particularly important because catalytic-converter and turbine-outlet temperatures can become extremely high during sustained high-load operation.

.065-INCH T304L STAINLESS CONSTRUCTION

Each catalyst assembly is fabricated from:

Mandrel-bent .065-inch-wall T304L stainless steel

T304L provides:

• High-temperature resistance

• Corrosion resistance

• Structural durability

• Long-term exhaust-system reliability

• Consistent fabrication characteristics

BACK-PURGED TIG WELDING

SOUL uses back-purged TIG welding during fabrication.

Back purging protects the interior of the stainless tubing from excessive oxidation during welding and promotes:

• Proper weld penetration

• Cleaner internal weld surfaces

• Improved long-term durability

• Consistent exhaust-flow surfaces

FIXTURE-TESTED FITMENT

Each completed set is tested in a dedicated fixture before shipment.

This helps ensure correct:

• Flange orientation

• Pipe alignment

• Turbocharger connection geometry

• Downstream exhaust alignment

SOUL then performs its in-house quality-control inspection before packaging the components for shipment.

DIRECT BOLT-ON INSTALLATION

The Sport Catalytic Converters directly replace the original Porsche catalyst assemblies.

No permanent chassis modification is required.

The system retains the factory turbo heat shields and interfaces with the appropriate factory or SOUL downstream exhaust components.

WITH FACTORY REAR EXHAUST

The Sport Catalytic Converters can be installed while retaining the original non-PSE rear exhaust.

This configuration provides:

• Increased turbocharger sound

• Improved exhaust flow

• Improved throttle response

• Retained factory rear muffler

• Retained factory exterior appearance

• More conservative overall sound than a complete aftermarket exhaust system

This is a good first-stage configuration for an otherwise-stock non-PSE Carrera.

WITH SOUL PERFORMANCE EXHAUST

Pairing the Sport Catalytic Converters with SOUL's Performance Exhaust creates a more comprehensive exhaust upgrade.

The combination provides:

• Reduced catalyst restriction

• Increased turbocharger sound

• Increased rear exhaust volume

• Greater flat-six character

• Improved throttle response

• Optional Helmholtz anti-drone technology

For street-driven vehicles, the Performance Exhaust with Anti-Drone Tubes provides additional acoustic control in the 1,800–2,200 RPM cruising range.

IMPORTANT CARRERA S TIP COMPATIBILITY

These Sport Catalytic Converters are particularly relevant for Carrera S / Carrera 4S owners using SOUL's non-PSE Performance Exhaust.

With the factory catalytic converters, SOUL specifies that S-model cars cannot use their original S-model tips with the Performance Exhaust.

When the Performance Exhaust is combined with SOUL Sport Catalytic Converters, the S model can use compatible SOUL exhaust-tip options.

This should be considered when planning a complete non-PSE Carrera S exhaust system.

WITH SOUL SPORT HEADERS

The Sport Catalytic Converters can also be paired with SOUL Sport Headers.

The components address opposite sides of the turbocharger:

SOUL Sport Headers

Improve exhaust flow into the turbochargers.

SOUL Sport Catalytic Converters

Reduce restriction after the turbochargers.

Together, they provide a more comprehensive exhaust-flow improvement while retaining catalytic converters.

SPORT CATALYTIC CONVERTERS VS. CAT BYPASS PIPES

SOUL Sport Catalytic Converters

• $3,355.00

• Retain catalytic converters

• Premium high-flow catalyst elements

• Increased turbocharger sound

• Improved throttle response

• Developed for CEL-free operation

• More street-oriented configuration

SOUL Cat Bypass Pipes

• $1,975.00

• Completely catless

• 3-inch straight-through piping

• Lower purchase price

• Maximum catalyst-section flow

• Maximum turbocharger sound

• May trigger catalyst-related check engine lights

• Competition-focused configuration

The Sport Catalytic Converters are the more conservative choice for owners who want increased flow and sound while retaining catalytic converters.

PERFORMANCE

SOUL states that the Sport Catalytic Converters provide significant increases in power in addition to improved throttle response and sound.

However, the current manufacturer page does not publish a controlled standalone horsepower or torque figure for POR.9912.SCC.

DasMotoring therefore does not advertise a specific numerical power increase for this product.

WEIGHT

SOUL's current product page does not publish verified factory and SOUL component weights for the non-PSE Sport Catalytic Converters.

DasMotoring therefore does not advertise a numerical weight-savings figure.

EMISSIONS NOTE

The Sport Catalytic Converters retain catalytic converters but replace the original Porsche catalyst assemblies with aftermarket high-flow components.

They are not represented here as original-equipment emissions components.

Customers are responsible for determining whether the product and their complete vehicle configuration comply with applicable federal, state, and local regulations.