BMW M3 (E92) - Valved Exhaust with Mid-Pipes (CES3)This exhaust system is only designed to work with the M3 E92 It will not work with the M3 E90 93 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