Process West DITTO Street Intake Manifold - Subaru WRX VA 15-21 Intake Systems The biggest flaw on the

The biggest flaw on the factory manifold is only 3 runners reaching the collector even though its a 4 cylinder

and covered in a black silicone rubber

Here at RCM we manufacture both a 12mm and 14mm replacement head stud and nut kits

The RCM solution is a modified baffled version of the standard sump pan which is designed to combat the effects of oil surge via a specially constructed hand made insert or baffle fixed inside the standard sump

Cooler Intake Charge Boosts Power And Response

Process West DITTO Street Intake Manifold - Subaru WRX VA 15-21 Intake Systems The biggest flaw on theNote: First image shows RACE manifold with port injection fuel rail addition. This listing is for STREET manifold with no additional fuel rails. New release from Process West! The DITTO (Direct Injection Tubular Original) intake manifold offers improved intake aerodynamics allowing for big horsepower potential from stock power levels all the way through to big built engine setups. Compatible with factory throttle body and EGR systems to allow for true