Description And Operation: Operation

At closed or partially open throttle positions, the bypass valve is fully open, allowing intake air to bypass the supercharger. This results in little or no pressure increase across the supercharger. Progressive opening of the throttle reduces the depression downstream of the electric throttle. This is sensed by the ECM from the MAP sensor input. The ECM then signals the bypass valve actuator to progressively close the bypass valve. As the bypass valve closes there is a corresponding increase in the outlet pressure from the supercharger, which increases engine power output.