Description
Turbosmart Upgraded Wastegate Actuators have been developed to provide the maximum possible boost response for your factory frame turbocharger. The Turbosmart IWG75 Series of upgraded Actuators benefit from an increased ‘Working Ratio’ over the factory equipment resulting in improved boost response throughout the RPM range.
This Improved ‘working ratio’ is achieved through an increase to the effective surface area of the diaphragm & revisions to the actual springs fitted, resulting in greater leverage of the forces the actuator is working against (boost and backpressure) while still being super-responsive.
Upgrading with the same base pressure as the factory, you can expect a broader boost & torque curve through peak boost being achieved earlier in the RPM and being held longer into higher RPM. These improvements can be amplified with higher base pressures. However, tuning & recalibration is likely required.
Features
Proprietary Silicon Nomex Diaphragm
Choice of Springs from 3psi to 26psi (Optional)
High-Grade Billet Aluminum Construction
Stainless Steel Rods and Clevis
Turbosmart Unique Locking Collar System
TECHNICAL DRAWINGS
SUPPLIED WITHIWG75 Wastegate ActuatorVehicle Specific Mounting BracketSprings Pre-Fitted as per DescriptionRequired Fasteners & Swivel Hose Barb
SPRING CHART
SUITABLE FOR
This is a bolt-on fitment for the VF Series (VF39, VF43, VF48 and VF52) turbocharger as a fitted factory to the EJ25 Powered Subaru WRX STi 2004-2020.
Fitment:
Subaru STI
04-07 Subaru Impreza WRX STI 2.5 Turbo EJ257
08-14 Subaru Impreza WRX STI 2.5 Turbo EJ257
15-21 Subaru WRX STI 2.5 Turbo EJ257
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