Audi S4/S5 B9 Non Sport Diff models - Resonated (Quieter) Cat-Back Exhaust System with Quad GT-90 Titanium Trims Model_(8P) 2.0 TFSI 2WD (5 Door) 2004-12 Some vehicles sport two catalysts

Some vehicles sport two catalysts due to their dual pipe assembly

sold separately)

By incorporating the valve

A simple ECU reflash will be required at the time of fitting to prevent engine warning lights illuminating

Fitment is for motorsport and off road use only as this system removes the GPF filter

Audi S4/S5 B9 Non Sport Diff models - Resonated (Quieter) Cat-Back Exhaust System with Quad GT-90 Titanium Trims Model_(8P) 2.0 TFSI 2WD (5 Door) 2004-12 Some vehicles sport two catalystsOur range of Cat Back systems are perfectly suited to cater for anyone looking to improve their sound and aesthetics, designed as a direct replacement for the original system, available in multiple configurations enabling the owner to choose the increase in volume of their exhaust and or add a more suitably aggressive tone. All our products are made from 304L Aircraft Grade stainless steel. This quality material will ensure that your Cat Back system