SFI SYSTEM


  1. CONSTRUCTION


    1. 2 exhaust change valve drivers, which operate the exhaust change valve, are used.

    2. The exhaust change valve driver controls the drive motor built into the exhaust pipe gas control actuator sub-assembly according to request opening angle signals (PWM) from the ECM. Furthermore, the exhaust change valve driver receives signals from the opening angle sensor built into the exhaust pipe gas control actuator sub-assembly and sends exhaust change valve status signals (PWM) to the ECM.