Turbosmart's upgraded Wastegate actuators have been developed to provide the maximum possible pressure response for your factory frame turbocharger. Turbosmart IWG75 series upgraded actuators provide improved pressure response across the RPM range, benefiting from an increased duty ratio over factory equipment. The improved 'work rate' is achieved by increasing the effective surface area of ​​the diaphragm and revising the actual springs, making the actuator greater leverage to the forces it operates (pressure and back pressure) while still being super responsive. By upgrading with the same base pressure as factory, the upgrade is achieved earlier and higher in RPM You can expect a wider pressure and torque curve maintained at RPMs for longer. These improvements can be increased with higher base pressures. However, adjustment and recalibration is likely required.Custom Silicone Nomex DiaphragmSpring Option up to 3psi to 26psi (Optional)High Quality Machined Aluminum ConstructionStainless Steel Rods and ClevisTurbosmart's Unique Locking Collar System You can access up-to-date price information on our website.