Perrin - Subaru 04-14 STI - FMIC Air Oil Separator (Black) BF2025 heat tolerance

heat tolerance

with a larger diameter over the stock hose and the absence of a pleated section

The clutch allows the car to change from gear to gear in response to changing demand in speed

The Redline Carbon Fiber intake is compatible with existing COBB Off The Shelf Maps that support the standard SF Intake

Perrin - Subaru 04-14 STI - FMIC Air Oil Separator (Black) BF2025 heat toleranceOVERVIEW The PERRIN Air Oil Separator traps oil from the crankcase vents before it enters the intake, reduces carbon build up, increases intercooler efficiency, which reduces the chance of performance robbing detonation. NO TUNING REQUIRED Increase horsepower and torque without ECU recalibration or tune! This part is designed and tested to work safely on your vehicle without any tuning required! However, more power can be gained with proper ECU