The Radium Engineering tumble generator valve (TGV) delete kit replaces the OEM TGVs on the Subaru FA20DIT engine found in the 2015+ Subaru WRX and 2014+ Forester XT. This eliminates the restrictive butterfly valves in the intake runners for optimal flow. The parts are compatible with the factory O-ring sealed manifold, so no gaskets are required. The kit is a direct bolt-on and requires no permanent modification to the vehicle. A retune is required to take full advantage of the TGV deletes.
**ECU TUNING REQUIRED**