034Motorsport Stainless Steel Racing Catalyst, B9 Audi S4/S5 Quarter The spoiler is installed using

The spoiler is installed using 3m tape

Change the tone of your B9 S4 3

This is a performance enhancing induction kit for the BMW M5

5 S5 with the ECS Tuning Gloss Black Grille Accent Set

034Motorsport Stainless Steel Racing Catalyst, B9 Audi S4/S5 Quarter The spoiler is installed usingProduct Description: The 034Motorsport Stainless Steel Racing Catalyst for B9 Audi S4 S5 is designed as a drop in replacement for the restrictive factory catalytic converter. The Stainless Steel Racing Catalyst offers increased horsepower and torque throughout the powerband, reduced turbocharger lag, improved throttle response, and an enhanced exhaust note. This upgrade eliminates the primary flow limitation in the factory exhaust system, allowing you