Akrapovic Evolution Line Titanium Exhaust - C7 S6 AvantThe Audi S range of cars features high performance V8 engines that are a perfect match for the Akrapovi Evolution exhaust systems. Styled and designed in house by Akrapovi's engineers, the Audi S range of Evolution exhausts include valves that are steered through electric actuators designed to alter their position depending on the vehicle's driving program and the driver's style. They can also be changed in the car's individual program settings. The