IWG75 Nissan GTR R35 Black 19PSI Nissan R35 GT-R Internal Wastegate Kit includes two Internal Wastegate Actuators (IWGs) to provide better turbo response and greater sensitivity when managing boost pressures. Designed as a direct bolt-on replacement for the factory parts, Nissan R35 GT-R Internal Wastegate Kit 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.