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The Turbosmart IWG75 internal wastegate actuator for Subaru Impreza WRX/STi applications improves turbo response and boost control sensitivity over factory actuators. The IWG design increases the working ratio for quicker boost reaction; options include a range of spring choices. Construction features include stainless steel rods and a proprietary diaphragm to manage boost more precisely.
Turbosmart IWG75 Impreza WRX/STi 7 PSI Black Internal Wastegate Actuator
