OEM wastegate actuators tend to use soft springs, which begin to open long before peak boost is reached. The result is that you don’t get all the boost you could be getting. Turbosmart’s IWG-75 Internal Wastegate Actuator is a 12PSI-rated actuator designed with performance and reliability as key priorities. Turbosmart’s actuator provides faster boost build-up and less drop-off at high RPMs, with a more responsive and stable boost curve.