Killer B Motorsport 02-07 WRX-STi GD Air-Oil Separator Forged EJ Pistons this inlet hose prevents collapse

this inlet hose prevents collapse under high vacuum conditions while still providing necessary flex between the engine and intake

Not Holy Cow expensive

Boost control referenced to gear

Comes with spacer to fit 5MT (for 5 speed transmissions)

Killer B Motorsport 02-07 WRX-STi GD Air-Oil Separator Forged EJ Pistons this inlet hose prevents collapseThis is a product weve 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