CTS Turbo TT225Q/8L S3 Downpipe

We are proud to release the new CTS Turbo 3.0" Stainless Steel downpipe for the MK1 TT225Q.  Unfortunately, the factory downpipe that comes as standard equipment in your car was designed for anything but performance.  The factory downpipe severely restricts exhaust flow and therefor has adverse effects on horsepower, especially once your car is "chipped".  The CTS Turbo downpipe will allow for your exhaust gases to flow smoothly, freeing up the additional ponies that you want, all while look amazing.  Highlights of our downpipe include CNC machined turbine discharge (downpipe) flange, mandrel bent 3" stainless steel tubing, modular design making installation of a catalytic converter simple and straight forward, smooth transitions allowing for optimal exhaust gas flow. Precision fabrication, unparalleled quality and great price point all make the CTS Turbo MK1 225Q Downpipe a must-have for any Audi enthusiast that values performance and their pocketbook. NOTE: WILL NOT FIT CONVERTIBLE. Product Details: -T304 Seamless Stainless Steel tubing -T304 Stainless Steel flanges -100% TIG Welded -T304 Stainless Steel 02 bung -Stainless Steel Clamps -Great Sound To remove the CEL that will occur, proper tuning software must be used. CTS Turbo recommends choosing a High Flow Cat for the sake of our environment! Stage 2 software is required to avoid check engine light.

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 2 applications

TT

Make	Model	Engine	Years
AUDI	TT		2001–2006
AUDI	TT (8N)		2001–2006

Fitment data last updated: 2026-06-30