Milltek Large Bore Downpipe and Hi-Flow Sports Cat for Audi 8V/8Y RS3

Product Description

Upgrade your Audi 8V/8Y RS3 with the Milltek Large Bore Downpipe and Hi-Flow Sports Cat. Designed to reduce back-pressure and improve exhaust gas flow, this system supports increased horsepower and torque when paired with proper tuning.

Constructed from high-quality stainless steel with a high-flow catalyst, this downpipe is engineered for durability, performance, and direct-fit installation.

Key Features and Benefits

• Large bore construction for improved exhaust flow
• Improved turbo response
• Hi-flow 200CPSI catalyst
• High-quality stainless steel construction
• Precision fitment
• Supports Stage 2 tune

Vehicle Compatibility

• Audi 8Y/8Y.2 RS3 (2022+)
• Audi 8V/8V.5 RS3 (2017–2020)

Installation and Notes

• Fits both OE and Milltek Catback Exhaust Systems
• Stage 2 ECU tune required
• Professional installation recommended for best results
  
• Inspect gaskets and hardware during installation
• Check for leaks after installation
  

Frequently Asked Questions

Q: Will this increase power?
A: Yes. A larger-bore downpipe improves flow and supports higher power levels with proper tuning.

Q: Do I need an ECU tune?
A: Yes. A Stage 2 tune is required.

Q: Will this work with stock exhaust?
A: Yes. Fits both OE and Milltek Exhaust Systems.

Recommended Upgrades

• ECU Tune
• Milltek Catback Exhaust System
• High-flow air intake
  

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