We now carry a wide range of wastegate actuators to suit various performance applications.
Inside the actuator on one side of the diaphragm is a spring and on the other a vacuum port where pressurized air is fed. As boost pressure rises and pressurized air is fed into the wastegate actuator, the pressure on the diaphragm increases and at some point will overcome the spring tension on the other side of the diaphragm and cause the rod to start moving. This rod is in turn connected to the wastegate arm on the turbo, as it moves the wastegate inside the turbo begins to open and exhaust gasses start to bypass the turbine.
An incorrectly calibrated actuator even fitted to a highly tuned engine can result in surprisingly poor performance and could put your turbo at risk of damage by overboosting.
Further protection can also be acquired by fitting a blow off or anti-surge valve on the compressor side of the turbo
Various actuator options, blow off valves, and piping are now available from stock.