Ferrari 328GTB/S, 308QV, and Mondial - FreeFlow Exhaust (Euro Only)**fits carbureted Euro Version Only** The systems allows free flowing gasses through the silencer with no valves. If installed with sports cats, a check engine light may be triggered so tuning of the ECU may be required. Sound 3: generates typical Ferrari F1 sound Capristo Exhaust emphasizes that you should avoid to rev up your car while not moving! The exhaust flames that may occur could cause damage to vehicles and people in the near proximity!