Audi A4 2.0 B9 Quattro - Resonated (Quieter) Cat-Back Exhaust System with Dual GT-100 Cerakote Black Trims a4b6 the Cobra Sport exhaust has

the Cobra Sport exhaust has been designed with this in mind

Example of the Mercedes-AMG A 45 Performance Exhausts (de-cat downpipe fitted with standard exhaust system)

once the module is installed it will default valve behaviour to be as follows

Fitment will require basic engine tuning at time of fitment to cancel the EML light

The exhaust now emits a deep and vibrant tone

Audi A4 2.0 B9 Quattro - Resonated (Quieter) Cat-Back Exhaust System with Dual GT-100 Cerakote Black Trims a4b6 the Cobra Sport exhaust hasOur 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