GenV IWG (Twin Port) Wastegate Actuator Suit Garrett G25 14 PsiTurbosmart GenV Twin Port Internal Wastegate Actuator to suit Garrett G25 Series Turbochargers. This IWG actuator has it all, taking technology from the Award winning GenV range of External Wastegates and providing unparalleled actuator performance. Turbosmart GenV IWG (Internal Wastegate Actuator) Range provides improvements in boost control over your factory actuator. Our unique diaphragm system's large working surface area ensures increased boost