Description
Designed for the Audi SQ7, SQ8, RSQ8, and Lamborghini Urus, the Untd. Performance Catless Downpipe is an ideal upgrade for enthusiasts looking to improve turbocharger response, increase performance potential, and give the 4.0T V8 a more aggressive and pronounced exhaust character.
Key Features
Catless Design – Improved Exhaust Flow:
The Untd. Performance Catless Downpipe eliminates the restrictive factory catalytic converter, allowing exhaust gases to flow more freely from the EA825 twin-turbo V8. Reduced exhaust restriction can help lower backpressure and improve overall turbocharger efficiency.
Improved Turbo Response & Performance:
The freer-flowing design allows the twin turbochargers to expel exhaust gases more efficiently. When combined with an appropriate ECU tune and supporting modifications, the increased exhaust flow can help improve turbo response, throttle response, horsepower, and torque.
Aggressive 4.0T Twin-Turbo V8 Sound:
The catless design enhances the character of the EA825 V8, producing a deeper, louder, and more aggressive exhaust tone. Turbocharger sounds and the V8 exhaust note become more pronounced during acceleration.
Durable Construction:
Built to withstand the extreme temperatures, exhaust pressure, and demanding conditions generated by the 4.0T EA825 twin-turbocharged V8. Precision-welded construction provides dependable performance under demanding driving conditions.
Direct-Fit Design:
Engineered specifically for compatible Audi SQ7, SQ8, RSQ8, and Lamborghini Urus 4.0T EA825 applications, providing a direct replacement for the factory downpipe and designed to work with suitable OEM and aftermarket exhaust components.
Installation Hardware Included:
The downpipe includes replacement gaskets, bolts, and required installation hardware to help ensure a proper fit and secure installation. Supplied hardware helps simplify installation while providing the necessary components for proper sealing and mounting.
Tune Recommended / Required for Optimal Performance:
An ECU tune is strongly recommended and may be required when installing a catless downpipe. Proper calibration allows the EA825 engine and turbochargers to take full advantage of the increased exhaust flow while optimizing boost control, fueling, throttle response, and overall performance.
⚠️ 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 after installation and address catalyst-efficiency-related fault codes. Tune requirements can vary depending on model year, ECU software, emissions equipment, and existing modifications.
For optimal performance, drivability, and compatibility, professional ECU tuning is recommended.
Why Upgrade?
The factory catalytic converters are designed primarily for emissions control and can create additional restriction within the exhaust system. Replacing them with the Untd. Performance Catless Downpipe allows exhaust gases to flow more freely from the EA825 turbochargers.
Reducing exhaust restriction can help improve turbocharger efficiency and provide a more responsive driving experience. When paired with proper ECU tuning and supporting modifications, the catless downpipe provides an excellent foundation for extracting additional performance from the 4.0T EA825 twin-turbocharged V8.
The freer-flowing design also gives the SQ7, SQ8, RSQ8, and Urus a more aggressive and pronounced exhaust character, allowing more of the V8 and turbocharger sound to come through.
Compatibility
- Audi SQ7 – 4.0T EA825 Twin-Turbo V8
- Audi SQ8 – 4.0T EA825 Twin-Turbo V8
- Audi RSQ8 – 4.0T EA825 Twin-Turbo V8
- Lamborghini Urus – 4.0T EA825 Twin-Turbo V8
- 4.0T EA825 Twin-Turbocharged V8 Applications
Fitment may vary depending on model year, market, drivetrain, emissions equipment, ECU software, 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, inspection, and vehicle regulations before installation.
A Check Engine Light may occur without appropriate ECU calibration. A compatible tune may be required for proper operation and optimal performance.
Professional installation and ECU calibration are recommended.
Untd. Performance is not responsible for emissions compliance, inspection requirements, or the legality of installing or operating this product on public roads.
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