Audi RS7

With the help from ABT Sportsline, the worlds largest tuner of vehicles from Audi and VW, owners now can further enhance the power, sound and aesthetics of the dynamic Sportback. By utilizing the sophisticated ABT Engine Control unit (AEC) the output of the 4.0-liter V8 increases from 591 HP / 590 lb-ft of torque to approximately 690 HP and 649 lb-ft* (with 93 octane fuel) in a safe and reliable way. The ABT Performance Upgrade comes with TÜV (German DOT) certification and a lot of engine protection measures to provide drivers with a with guilt-free driving pleasure. Whether used in combination with an ABT power upgrade or the regular engine performance, the ABT stainless steel exhaust system stirs the emotions even further. Consisting of a middle muffler replacement pipe, rear muffler with electronically adjustable exhaust valves and dual exhaust pipes per side the ABT exhaust system displays an impressive sound range. The ABT exhaust system significantly reduces exhaust back pressure and changes the look of the car by adding two 4-inch (102-mm) diameter matt carbon fiber end pipes to each side.