GSC Power-Division Exhaust Valve Guide Set (gsc3057-12) 1736 Multiple map options including cold

Multiple map options including cold start delete and off-road downpipe map

are a most have for any of our exhaust systems

Incredible increase is sports car sound and turbo spool sound

5 2003 Acura RL Engine: 3

7 1989 Chevrolet Corvette Engine: 5

GSC Power-Division Exhaust Valve Guide Set (gsc3057-12) 1736 Multiple map options including coldWhen creating our new valve line we set out to create the best performance, longest lasting valves available to the aftermarket. Using advanced 3D design and simulation software, we have created a stronger and higher flowing valve head design. We flow test prototype valve heads in the specific applications to make sure we have the highest flowing valve head available on the market today. With the materials used, we have less valve distortion at the