Audi S4 B7 - Non-Resonated (Louder) Cat-Back Exhaust System with Polished Trims Model_Mk5 GTI 2.0 T FSI (1K) (04-09) A reduction in friction of

A reduction in friction of up to 26% plus a reduction in wear compared to a standard engine oil

To achieve the above performance figures Garrett also modified the engine to the following specifications:Larger intercoolerCustom exhaust systemReinforced pistons - lowered compression ratio of 9

Designed as an entry level stage 3 hybrid turbo

easier rev matching

Audi S4 B7 - Non-Resonated (Louder) Cat-Back Exhaust System with Polished Trims Model_Mk5 GTI 2.0 T FSI (1K) (04-09) A reduction in friction ofOur 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