Turbosmart IWG75 Bolt-On Upgraded Actuators for the Nissan Skyline GT-R; R32, R33 and R34. The Turbosmart IWG75 Range of Internal Wastegate Actuators takes the Motorsport Proven technology from our External Wastegates and applies it to the internal wastegate actuator.Turbosmart's large diaphragm working area ensures you're in control of your boost curve. This increased working surface area ensures greater mechanical advantage and provides the broadest possible boost curve with improved, more sensitive control.Available In7 Psi: TS-0615-607214psi: TS-0615-6142FeaturesProprietary Silicon Nomex DiaphragmChoice of Spring from 3psi to 26psi (Optional)High Grade Billet Aluminium ConstructionStainless  Steel Rods and ClevisTurbosmart Unique Locking Collar Design