Audi S4 B9 Sport Diff without Brace Bars - Non-Resonated Cat Back with Titanium Trims GOLFMK5 This module is designed to

This module is designed to integrate with the existing driver select modes to operate the valves

Comfort / Eco Mode = Closed up to 5k RPM

The unbelievable resonated sound quality is pitch perfect

We recommend these for customers running Stage 1 or Stage 2 They differ to the other NGK Competition plugs in that they have a Angled Ground Strap type Electrode

Example of the Cobra Sport Audi TTS (Mk3) Quattro Sports Exhaust (cat back system with resonated section)

Audi S4 B9 Sport Diff without Brace Bars - Non-Resonated Cat Back with Titanium Trims GOLFMK5 This module is designed toOur 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