Replacing the factory downpipe and catalytic converter is an important step when upgrading any 1.8T. The factory downpipe and cat is incredibly restrictive. Reducing backpressure at the turbo exit instantly increases turbo response, horsepower and torque. Since the 1.8T first hit the streets, performance shops and enthusiasts have proven that downpipe upgrades provide a healthy power increase. Internet rumors and opinions say 2.5" downpipes are "better" than 3" downpipes. We choose 3" for maximum gains. Why not go all out?

Our 3" downpipe begins at the turbo with a CNC machined turbo flange. A custom transition pressed from 1/8" thick steel provides a smooth reduction to 3" piping. This transition is overkill, absorbing heat from the turbo and preventing metal fatigue. Our piping is mandrel bent in one piece to add strength and eliminate unnecessary welds. A stainless steel flex section is used to absorb engine movement. After the flex section a CNC machined flange allows a 3" high-flow cat or test pipe to be installed. We use a Magnaflow 200 cell metal catalytic converter in a spun stainless steel body. After the cat, custom adaptors allow perfect bolt-on fitment to any aftermarket cat-back. We offer adaptors for stock exhaust, 2.5" and 3" cat-backs. The whole downpipe bolts together with locking hardware and double layer graphite gaskets. Precision components and meticulous fabrication ensures zero leaks and zero problems. 

Features:

- CNC mandrel bent 14 gauge aluminized steel tubing

- CNC machined 1018 cold roll steel flanges

- Professional TIG welded construction throughout

- 409 stainless steel 200 cell metal catalytic converter

- Stainless steel braided flex section

- Double layer graphite gaskets

- Grade 5 locking hardware.

* Does not fit Quattro TT