Audi R8 GT (V10 Facelift) - X Pipe Exhaust (CES3)**This system is specifically designed for the 2011 to 2013 R8 GT and does not fit other models** The iconic CAPRISTO Valved Exhaust System offers the best of both worlds through its capability to produce an aggressive exhaust note under acceleration, and a more subdued sound for city driving. This feature is possible using vacuum actuated valve flaps that open and close depending on driving conditions and input from the driver. At lower engine speeds