….oil and air that is, if performance is anywhere remotely on your radar screen with your car. From the factory excess crankcase vapors, residual oil and moisture are vented back into the intake manifold and intercooler which compromises performance and durability. Removing the excess crankcase vapors, residual oil and moisture are accomplished by having two tanks; one tank collects from the intake manifold tract and the second tank collects from each cylinder head. If both were plumbed into the same tank then the crankcase ventilation system could not operate the way it was designed to, the Moroso kit is the only Subaru air separator that accomplishes this. Removing this oil mist before it reenters the engine; reduces detonation, deposits on the intake track including the valves themselves and from lowering the efficiency of the intercooler itself.
We have these kits from Moroso available for a variety of cars, including the Subaru WRX/STi, Mitsubishi Evo, Mazda Miata, and more. Contact us at email@example.com for details