6.7L Power Stroke – Wastegate Solenoid and Actuator

The wastegate on the DualBoost VGT is vacuum controlled through a solenoid that is controlled by the PCM.
The wastegate is only used on the DualBoost turbocharger.
The wastegate opens to relieve excessive exhaust pressure at higher RPMs.
When the VGT cannot react quickly enough to reduce MAP pressure, the wastegate will open to reduce EP to slow down the turbo.