The Audi S3 Cat Back performance exhaust system is one to be reckoned with. 4” O.D. 304 Stainless or Carbon Fiber Tips Improved throttle response with enhanced sound 3” Mandrel-bent tubing High flow dual mufflers; +21% increase in flow Helmholtz Resonator technology
The Audi S3 Cat Back performance exhaust system is one to be reckoned with. 4” O.D. 304 Stainless or Carbon Fiber Tips Improved throttle response with enhanced sound 3” Mandrel-bent tubing High flow dual mufflers; +21% increase in flow Helmholtz Resonator technology