GSC Standard Size 36mm Intake Valve Set - Subaru EJ20 / EJ25 Turbo Air Fuel Ratio Gauges providing stable and repeatable boost

providing stable and repeatable boost control to base the vehicle's tune on

and spark plugs

provides outstanding durability and appearance

BC's Stage 3 cams are intended for fully built Dual AVCS STI race engines and will require ECU calibrations

This model has a divorced wastegate and INCLUDES a catalytic converter

GSC Standard Size 36mm Intake Valve Set - Subaru EJ20 / EJ25 Turbo Air Fuel Ratio Gauges providing stable and repeatable boostGSC set out to create the best performance, longest lasting Subaru intake valves available to the aftermarket. Using advanced 3D design and simulation programs GSC created a stronger and higher flowing valve head design. GSC flow tests prototype valve heads to specific applications, making sure they have the highest flowing valve head available on the market today. The materials used by GSC have less valve distortion at the face than any of the tested