APR EXHAUST - CATBACK SYSTEM - AUDI S3 (8V) Audi B8 4 CYL Computer controlled exhaust valves are

Computer controlled exhaust valves are retained and limit noise during low speed driving and open fully during high-load conditions

This process has been a cornerstone of Dinan software development for decades and a major reason why Dinan performance tunes are often labeled as being the smoothest

depending on octane

Complete Heat Protected

APR EXHAUST - CATBACK SYSTEM - AUDI S3 (8V) Audi B8 4 CYL Computer controlled exhaust valves arePersonalize your vehicle's looks, sound and performance with this beautiful 3" T304 stainless steel catback exhaust system. T304 stainless steel construction Argon back purged TIG welding throughout Single 3" to quad 2. 5" mandrel bent brushed tubing Ultra smooth cast 3" to quad 2. 5" splitter Brushed finished straight through sound absorption mufflers and Helmholtz frequency reducing resonator Polished 4" slash cut exhaust tips (removable) Cast valve