CTS Turbo B6 Audi A4 1.8T High Flow Cat Pipe

The CTS Turbo high flow cat pipe replaces the factory catalytic converter on B6 Audi A4 1.8T models from 2002 to 2005. Designed to reduce exhaust backpressure, this direct replacement component allows spent gases to exit more efficiently, supporting improved turbo spool characteristics and throttle response. Precision-engineered construction ensures proper fitment to factory mounting points and oxygen sensor provisions. An effective upgrade for workshops building responsive 1.8T turbocharged platforms where reducing restriction in the exhaust path delivers measurable gains in driveability and performance output.