Killer B Air Oil Separator for Subaru 08-14 WRX, 08+ STI, 05-09 Legacy - GR-MV3S-C

After years of being asked to develop a Killer B Motorsport Air/Oil Separator, we are proud to announce we have released the FA20 WRX Air/Oil Separator. This is a product we’ve been asked to develop for many years, and in that time there has been a lot of research, engineering, simulations, development, testing, (and repeat), with several different Subaru engines and build types, including stock engines. This process has occurred within many different seasons, exposing the Air/Oil Separator to extreme environmental and driving conditions (daily driving, auto-X, drag racing, dyno testing, etc.), as well as exceeding 700whp. The goal of this product is simple. To function as its Air/Oil Separator name implies: to remove oil, in liquid or vapor form, from the vented crankcase gasses. Simple in premise, but functionally there’s a bit more to it. Oil droplet sizes vary with differing pressure and velocity conditions. Different engines vary in their venting characteristics. Street cars vary