Porsche 991.2 Carrera with 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 models equipped with Porsche Sport Exhaust / PSE, replacing the restrictive factory catalytic converters with high-flow performance catalysts designed to improve power, throttle response, turbocharger sound, and overall exhaust character without sacrificing normal drivability.

SOUL developed the system specifically to increase exhaust flow while maintaining proper catalyst operation and avoiding the check-engine-light concerns commonly associated with catless exhaust components.

Independent Dynojet testing performed by AWE Tuning on an otherwise stock 2017 Carrera 4S showed maximum gains of approximately 14 wheel horsepower and 15 lb-ft of torque, with gains of approximately 12 whp and 13 lb-ft at 4,700 RPM.

The SOUL assemblies also reduce exhaust-system weight by approximately 3.2 lbs / 1.5 kg, weighing approximately 12.8 lbs compared with 16 lbs for the corresponding factory components.

FITMENT:

• Fits 2017–2019 Porsche 991.2 911 Carrera with PSE

• Fits 2017–2019 Porsche 991.2 911 Carrera S with PSE

• Fits 2017–2019 Porsche 991.2 911 Carrera 4 with PSE

• Fits 2017–2019 Porsche 991.2 911 Carrera 4S with PSE

• Fits 2017–2019 Porsche 991.2 911 Targa 4 with PSE

• Fits 2017–2019 Porsche 991.2 911 Targa 4S with PSE

• Fits 2017–2019 Porsche 991.2 911 Carrera GTS

• Fits 2017–2019 Porsche 991.2 911 Carrera 4 GTS

• Fits 2017–2019 Porsche 991.2 911 Targa 4 GTS

• Fits 2018–2019 Porsche 991.2 911 Carrera T with PSE

• Designed specifically around Porsche Sport Exhaust / PSE-equipped vehicles

• Compatible with PDK and manual-transmission applications where offered by Porsche

• Direct replacement for the factory catalytic-converter assemblies

• Retains the factory turbocharger heat shields

DETAILS:

• Pair of high-flow Sport Catalytic Converters

• Replaces the restrictive factory catalytic converters

• Designed specifically for 991.2 Carrera models with PSE

• Turbocharged 3.0L flat-six applications

• Improves exhaust flow

• Improves throttle response

• Increases turbocharger sound

• Increases overall exhaust volume and character

• Manufacturer-tested maximum gain of approximately 14 whp

• Manufacturer-tested maximum gain of approximately 15 lb-ft of torque

• Approximately +12 whp / +13 lb-ft at 4,700 RPM

• Dyno tested on a 2017 Carrera 4S with no other modifications

• Designed to operate without triggering a catalyst-related check engine light

• No ECU tune required for normal installation

• Greater gains are possible when combined with appropriate ECU calibration

• SOUL assemblies weigh approximately 12.8 lbs

• Corresponding factory components weigh approximately 16 lbs

• Saves approximately 3.2 lbs / 1.5 kg

• Retains factory turbo heat shields

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

• Back-purged TIG welded

• Fixture-tested before shipment

• Direct bolt-on installation

• Installation hardware included

• Detailed installation instructions included

• Rear bumper removal is not required

• Suitable for experienced DIY installation

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

HIGH-FLOW CATALYTIC CONVERTERS:

The factory catalytic converters create a significant restriction immediately downstream of the turbochargers.

SOUL's Sport Catalytic Converters replace those assemblies with freer-flowing performance catalysts designed to improve exhaust flow without converting the vehicle to a completely catless configuration.

This provides a balance between:

• Increased exhaust-flow capacity

• Improved power potential

• Faster engine response

• Greater turbocharger sound

• Increased exhaust character

• Retained catalytic converters

• Reduced likelihood of catalyst-efficiency faults compared with catless bypass pipes

For a street-driven 991.2 Carrera, this makes the Sport Catalytic Converters a less extreme alternative to SOUL's Cat Bypass Pipes.

DYNO-TESTED PERFORMANCE:

SOUL approached AWE Tuning for independent third-party dyno testing of its development vehicle.

The test vehicle was a:

2017 Porsche 991.2 Carrera 4S

with:

No other modifications

SOUL recorded approximately:

+12 wheel horsepower

and

+13 lb-ft of torque

at approximately:

4,700 RPM

Maximum measured gains reached approximately:

+14 wheel horsepower

and

+15 lb-ft of torque

These are particularly useful figures because the comparison represents the Sport Catalytic Converters on an otherwise stock vehicle rather than a combination of exhaust, intake, and ECU modifications.

MORE POTENTIAL WITH ECU TUNING:

The published dyno testing was performed without other vehicle modifications.

SOUL notes that greater gains can be expected when the freer-flowing catalytic converters are paired with appropriate ECU calibration.

A tuned turbocharged engine can request increased airflow and boost, making reduced post-turbo exhaust restriction increasingly valuable.

Actual gains will depend on:

• Carrera model

• ECU calibration

• Fuel quality

• Boost targets

• Intake modifications

• Additional exhaust components

• Ambient conditions

• Dyno type and testing procedure

The published 14-whp / 15-lb-ft figures should therefore be treated as SOUL's tested result rather than a guaranteed increase on every vehicle.

THROTTLE RESPONSE:

Reducing exhaust restriction immediately downstream of the turbochargers can improve the engine's response to throttle input.

SOUL specifically identifies improved:

• Throttle response

• Power

• Exhaust flow

as benefits of the Sport Catalytic Converters.

The difference becomes even more relevant when additional performance modifications increase the engine's airflow requirements.

INCREASED TURBO SOUND:

One of the most noticeable changes from the Sport Catalytic Converters is increased turbocharger sound.

The freer-flowing catalyst assemblies allow more:

• Turbo spool

• Turbo whistle

• Compressor / turbine character

• Exhaust sound

to reach the driver.

The result is a more obvious turbocharged character without requiring a complete replacement exhaust system.

EXHAUST SOUND:

Expect an increase in:

• Overall exhaust volume

• Turbocharger whistle

• Turbo spool sound

• Low- and midrange exhaust presence

• Full-throttle exhaust character

• Pops and burbles where produced by the factory calibration

Because the factory PSE system remains downstream, the vehicle retains the ability to alter its exhaust behavior through Porsche's original Sport Exhaust controls.

RETAINS FACTORY PSE:

The Sport Catalytic Converters are specifically designed for 991.2 Carrera models equipped with Porsche Sport Exhaust.

The factory PSE system downstream remains installed and functional.

Installing the Sport Catalytic Converters does not remove:

• Factory PSE mufflers

• Factory exhaust valves

• PSE button functionality

• Porsche's original exhaust-control strategy

The result is increased sound and flow while retaining the factory driver's ability to change exhaust behavior.

PSE ON:

With the Porsche Sport Exhaust system in its more aggressive operating mode, the reduced upstream restriction allows significantly more:

• Exhaust character

• Turbo sound

• Engine presence

to reach the driver.

This is where the Sport Catalytic Converters provide their most noticeable acoustic effect.

PSE OFF:

With PSE in its quieter setting, the factory downstream exhaust continues providing sound attenuation.

This allows the car to remain considerably more subdued than a permanently loud or fully catless exhaust configuration.

For street use, this gives the Sport Catalytic Converters a useful dual-purpose character.

NO CHECK ENGINE LIGHT:

SOUL specifically developed its Sport Catalytic Converters with the goal of increasing flow without triggering a check engine light.

SOUL's current product documentation identifies:

Added performance without a check engine light

as one of the primary advantages of the system.

This distinguishes the Sport Catalytic Converters from catless bypass pipes, which may require ECU calibration to address catalyst-monitoring faults.

As with any emissions-related aftermarket component, vehicle condition, sensor condition, calibration, and other modifications can affect diagnostic behavior.

NO ECU TUNE REQUIRED:

The Sport Catalytic Converters are designed as a bolt-on hardware upgrade.

An ECU tune is not required simply to install and operate the system.

This allows owners to install the catalysts on an otherwise stock car and realize measurable performance improvements.

An appropriate tune can be added later to take further advantage of the increased exhaust-flow capacity.

3.2-LB WEIGHT REDUCTION:

SOUL publishes the following component weights:

Factory Components:
Approximately 16 lbs

SOUL Sport Catalytic Converters:
Approximately 12.8 lbs

Weight Savings:
Approximately 3.2 lbs / 1.5 kg

While this is not a dramatic vehicle-weight reduction by itself, it provides an additional benefit alongside the improvements in exhaust flow and power.

RETAINS FACTORY TURBO HEAT SHIELDS:

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

This maintains the factory heat-management strategy around the turbochargers and surrounding engine-bay components.

This is an important consideration because post-turbo exhaust components operate at extremely high temperatures.

.065-INCH T304L STAINLESS CONSTRUCTION:

Each system is manufactured in-house from:

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

This construction provides a combination of:

• Heat resistance

• Corrosion resistance

• Structural strength

• Consistent exhaust geometry

• Long-term durability

BACK-PURGED TIG WELDING:

SOUL uses back-purged TIG welding during fabrication.

Back purging protects the inside of the stainless-steel tubing during welding, helping maintain proper weld penetration and reducing oxidation inside the exhaust path.

This is particularly valuable for components exposed to high exhaust-gas temperatures immediately downstream of the turbochargers.

DIRECT BOLT-ON INSTALLATION:

The Sport Catalytic Converters are designed to directly replace the original Porsche catalytic-converter assemblies.

SOUL includes:

• Installation hardware

• Detailed installation instructions

Rear bumper removal is not necessary to complete the installation, although additional access can be gained by removing it.

SOUL describes the job as straightforward enough for experienced DIY enthusiasts.

FACTORY EXHAUST COMPATIBILITY:

The Sport Catalytic Converters can be installed while retaining the remainder of the factory Porsche Sport Exhaust.

This provides a simple first-stage upgrade with:

• Factory PSE retained

• Factory mufflers retained

• Factory exhaust valves retained

• Factory heat shields retained

• Increased turbo sound

• Increased exhaust sound

• Measurable power improvement

WITH SOUL VALVED EXHAUST:

Pairing the Sport Catalytic Converters with the SOUL Valved Exhaust System further reduces downstream exhaust restriction and increases overall exhaust sound.

This combination retains driver-controlled valve operation while producing a substantially more aggressive exhaust character than the factory system.

WITH SOUL X-PIPE EXHAUST:

SOUL's X-Pipe Exhaust can also be combined with the Sport Catalytic Converters for a more aggressive downstream configuration.

The high-flow catalysts address restriction closer to the turbochargers while the X-pipe changes downstream exhaust flow and sound.

WITH SOUL SPORT HEADERS:

SOUL Sport Headers can further address restriction upstream of the turbochargers.

Combining:

Sport Headers + Sport Catalytic Converters + PSE rear exhaust

creates a more comprehensive turbo-back performance configuration while retaining catalytic converters and the factory PSE system downstream.

SPORT CATALYTIC CONVERTERS VS. CAT BYPASS PIPES:

Sport Catalytic Converters

• $3,715.00

• Retain catalytic converters

• Manufacturer-developed for no catalyst-related CEL

• Dyno-tested power gains

• Increased turbo and exhaust sound

• More street-oriented configuration

• Approximately 3.2 lbs lighter than factory

Cat Bypass Pipes

• Completely catless

• Lower exhaust restriction

• Greater exhaust volume

• Greater emissions and diagnostic considerations

• More competition-oriented configuration

For customers who want additional power and sound without immediately moving to a catless exhaust, the Sport Catalytic Converters are the more conservative option.

EMISSIONS / USE NOTE:

The SOUL Sport Catalytic Converters retain catalytic converters but replace the original Porsche emissions-related exhaust components with aftermarket performance parts.

The system is not CARB certified and SOUL lists it as intended for off-road use only.

Customers are responsible for determining compliance with applicable federal, state, and local emissions regulations before installation or use.