The Greddy RB25DET intake plenum manifold is suggested for moderate to heavy turbo engine modifications. This particular part is a must have for people running high boost! Greddy’s intake manifold will improve mid to high RPM range power as well. An upgraded high-flow intake also allows more exhaust gas to escape at a higher rate, so you get an overall power increase in your engine. Greddy’s manifold features high flow and allows you to bolt on a Q45 large throttle body for higher performance!Ī manifold’s runner length and shape determine the kind of horsepower and torque you can get out of your engine, so upgrading to a high-performance manifold contributes to those numbers. Get rid of the factory cross-over type intake manifold with the Greddy RB25DET intake manifold.