Cat Bypass Pipes replace the restrictive factory catalysts with free flowing straight pipes to unlock an invigorating increase in turbo sound, engine note, and throttle response. Revel in the new sensation of sounds as the turbos sing and exhaust crackles on deceleration.
DETAILS:
+ Fits North American model Porsche 992.1 Carrera vehicles (2020-2024) without Gasoline Particulate Filters / GPF
+ Also fits European spec models but must be paired with an ECU tune to eliminate resulting check engine lights
+ Designed and built in-house at our Willow Grove, PA facility
+ All Soul Performance Products are backed by a renowned Lifetime Warranty for both street and track use
Description
DEVELOPMENT: Looking to turn up the power, turn heads, or turn in faster laps? Cat Bypass Pipes forgo the factory catalytic converters for 4.75″ to 2.75″ piping for the best possible flow and performance. Factory bracketry is retained as are the most accurate locations for the O2 sensors. As a result of the increased flow you’ll enjoy better turbo response and an increase in drivability!
CONSTRUCTION: Each cat bypass pipe is made in-house by our fabrication team from mandrel bent .065″ wall, 2.5″ diameter T304L stainless steel tubing, CNC cut flanges, and laser cut brackets. All welds are back purged for increased longevity under the most extreme conditions.
POWER: Below are the real, unedited, straight from the Dyno Dynamics dyno results as conducted by CBTuning with before and after runs with factory setup and then SOUL Cat Bypass Pipes and CBTuning ECU tune. You’ll be amazed at power gains and response when paired with an upgraded ECU tune – increases of over 100 whp and 215 ft-lbs of torque almost immediately in the power band completely changed the drivability of the vehicle!
BOLT ON AND GO: Each set is built and tested in a thick gauge aluminum fixture (which prevents warping) for perfect fitment – guaranteed. Every set is rigorously quality-checked prior to shipping and then foam packed to ensure they arrive in perfect condition. New high grade hardware is included for the bracketry.
CHECK ENGINE LIGHT?: This product may trigger a check engine light due to removal of factory catalytic converters. We suggest a custom ECU tune to disable any check engine lights (for track use only).
LIFETIME WARRANTY: Enjoy your SOUL exhaust components for your Porsche with confidence on both the street and track as they are covered by our Lifetime Warranty! Our team will quickly work with you to resolve any issues or answer any questions that you may have.
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Ex: Shipping and return policies, size guides, and other common questions.
Performance
Boost engine horsepower and torque
Sound
Increase engine airflow & improve noise
Reliability
Reduce stress on components
OPTIONS / FEATURES:
Extend Or Add Burble
Multiple Custom Maps That You Can Alternate Between
Adjust the tune for your octane rating
Top speed limiter removal
Cold start delete - On/Off
Real-Time Data Monitoring
What is ECU Tuning?
The Engine Control Unit (ECU, ECM, or in many European vehicles, the DME) is the electronic brain of your car. It controls critical functions like fuel delivery, ignition timing, boost pressure, throttle response, and torque management. From the factory, manufacturers often program these systems with conservative calibrations to meet global emissions standards and fuel type variations. ECU tuning is the process of recalibrating that software to optimize performance. By carefully adjusting key parameters, we can unlock more horsepower, increased torque, sharper throttle response, and smoother power delivery — all while maintaining drivability and reliability. Euro Fiend Tuning specializes in precision ECU calibrations engineered to elevate your vehicle’s performance and deliver a more responsive, engaging driving experience.
Transmission (TCU) Tune
Transmission Control Unit (TCU) tuning allows us to fine-tune the shift speed, firmness, and overall behavior of automatic transmissions. By recalibrating the factory software, we can deliver faster shift times, crisper engagement, optimized shift points, improved launch control, and increased torque capacity — resulting in quicker acceleration and a more responsive, performance-focused driving experience.
- Enhanced acceleration across various ranges (1/4 mile, 60–130 mph, 100–150 mph, etc.)
- Torque limiter optimization
- Personalized torque control
- Faster paddle-to-shift action
- Raised internal control pressures to handle higher torque and prevent slippage
- Optimized Launch Control
ECU UNLOCK "OBD"
OBD communication makes tuning and datalogging your car simple, right from the driver’s seat using the OBD2 port under the dashboard. A tuning cable and instructions are included with your purchase.
Frequently Asked Questions
Your questions, answered: Everything you need to know about Stage 4 Tuning
ECU tuning is the process of adjusting the engine control unit's software to enhance vehicle performance, efficiency, or fuel economy.
It can, depending on the manufacturer. Many warranties do not cover modifications like ECU tuning.
Use the highest octane fuel recommended for your specific tune to ensure optimal performance and safety.
Yes, a properly tuned car can be used daily, as long as the tune is tailored for reliable, everyday driving.
CPC (Central Powertrain Controller) and TCU (Transmission Control Unit) manage your vehicle's powertrain and transmission systems, respectively.
Map switching allows you to change between different tuning settings (maps) for varying driving conditions without having to retune the ECU.
Yes, if done by a professional using proper tools, ECU tuning is generally safe for your vehicle.
ECU tuning works by modifying the software that controls engine parameters like fuel mixture, ignition timing, and boost pressure to optimize performance.
The process of installing a tune depends on the vehicle’s make and model. Some tunes are installed by connecting a tuning device to your car’s OBD-II port and uploading the tuned software, others may require ECU unlock.
Stage 1 is for vehicles with no modifications, stage 2 is for vehicles with bolt-on upgrades or downpipes installed.
We offer post-installation support, troubleshooting, and guidance on using your tuning software and hardware.
Choose tuning software that is compatible with your vehicle, has good reviews, and suits your performance goals (e.g., reliability vs. max power).
From our customers
Contact us
Have questions? We'd love to hear from you. Send us a message and we'll respond as soon as possible.
built & tuned
Developed for the enthusiast and designed for the racer
Tools included
Tools for OBD2 Tuning Included in Price
Fast shipping
Our Tuning ships within 2-3 business days to the United States. International destinations may vary, but average around 1-2 weeks.
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