Akrapovic Exhaust System for Audi RS7 Sportback (C7)S AU TI 4H EV Evolution Audis high performance RS models are an ideal match for the expertly styled and beautifully engineered Akrapovic Evolution exhaust systems. The Evolution gives more power, higher torque, decreases the weight, and delivers an unmistakable Akrapovic soundwhich has a deep sound at lower revs and a popping sound as things speed up when the throttle is lifted. This titanium exhaust system has cast collectors and three mufflers, with