Description
Whether you’re upgrading your car for increased performance, preparing for a higher-stage tune, or simply looking to unleash the unmistakable sound of the 2.5T five-cylinder, the Untd. Performance 3″ Catless Downpipe is built to deliver.
Key Features
Full 3″ Catless Design – Maximum Flow:
The full 3″ diameter design eliminates the restrictive factory catalytic converter, providing a significantly less restrictive exhaust path. Reduced backpressure helps improve exhaust flow, turbocharger response, and overall engine performance.
Improved Turbo Response & Performance:
With improved exhaust flow, the turbocharger can spool more efficiently and operate with less restriction. When paired with the appropriate ECU calibration, the downpipe can help unlock additional horsepower, torque, and sharper throttle response.
Aggressive 2.5T 5-Cylinder Sound:
Let the unmistakable sound of Audi’s 2.5T engine come alive. The catless design produces a louder, deeper, and more aggressive exhaust tone, while amplifying turbo spool, exhaust character, and the iconic five-cylinder sound.
Premium Stainless Steel Construction:
Manufactured from high-quality stainless steel and designed to withstand the extreme heat and pressure produced by a turbocharged performance engine. TIG-welded construction provides excellent durability for both street and performance applications.
Direct-Fit / Bolt-On Design:
Designed specifically for the Audi 2.5T platform for straightforward installation with compatible OEM or aftermarket exhaust components. No cutting or fabrication should be required when used with compatible components.
Tune Recommended / Required for Optimal Performance:
For the best performance and drivability, an ECU tune is strongly recommended when installing a catless downpipe. A performance calibration allows the engine and turbocharger to take full advantage of the increased exhaust flow.
⚠️ Check Engine Light Warning
A Check Engine Light (CEL) may occur after installing this catless downpipe due to the removal of the factory catalytic converter and the resulting change in exhaust emissions readings.
A compatible ECU tune is recommended and may be required to properly calibrate the vehicle for the catless downpipe and address catalyst-efficiency-related fault codes. Tune requirements can vary depending on the vehicle, ECU software, model year, and existing modifications.
For optimal performance, drivability, and compatibility, professional ECU tuning is recommended.
Why Upgrade?
The factory downpipe is designed with emissions control and noise reduction in mind, which can create significant restriction in the exhaust system. Replacing it with a 3″ catless downpipe allows the 2.5T engine and turbocharger to breathe more freely, improving exhaust flow and creating a much more aggressive driving experience.
When combined with proper ECU tuning and supporting modifications, the Untd. Performance downpipe provides an excellent foundation for extracting more performance from Audi’s legendary five-cylinder platform.
Compatibility
- Audi RS3 8V / 8V.5
- Audi RS3 8Y 2.5T
- Audi TTRS 8S 2.5T
- 2.5T 5-Cylinder EA855
Fitment may vary depending on model year, ECU calibration, and existing exhaust modifications. Please verify compatibility before ordering.
Important Notice
CATLESS / OFF-ROAD USE ONLY: This product eliminates the factory catalytic converter and may not be legal for use on public roads in your jurisdiction. Check your local emissions and vehicle regulations before installation. Untd. Performance is not responsible for emissions compliance or inspection requirements.
