Turbosmart Prospeed Racing Actuator suit Blouch Dominator Turbos 15Psi Wiederhren mit Queen Hits. In conjunction with PSR and Turbosmart, we have released our range of Actuators suit the Blouch Dominators Subaru WRX STi Internal Wastegate Actuator (IWG) provides better turbo response and greater sensitivity when managing boost pressures. Designed as a direct bolt on replacement for the factory part, the Subaru WRX STi IWG is easy to install and requires no special tools or fabrication. We've taken the proven technology from our WG38, 40 and 45mm External Wastegates and applied it to the Internal Wastegate Actuator. FEATURES: Silicone diaphragm with Nomex reinforcement to withstand high temperatures. High grade, billet aluminum construction. Stainless steel rods and connecting clevis for corrosion resistance. Locking Collar design cap allows for quick spring changes (Options from 3psi ot 26psi available). Ideal for use with any Turbosmart boost controller.