Welcome everybody to the Valvetronic Designs electronic control module. This system allows you to control your OEM or aftermarket exhaust valves with a touch of a button. There are two options for the kit, there is a single valve option and a dual valve option. Applicable to all exhaust systems with ELECTRONIC EXHAUST VALVES EXAMPLES: - BMW G80 M3 (2 Valve motor kit needed) - BMW F30 320i (1 Valve motor kit needed) If you ordered an F chassis exhaust for your F30 320i BMW which does not have an exhaust valve, you will use this kit to restore functionality and allow operation of the exhaust valve from within the vehicle.