Perrin - Subaru 02-07 WRX/STI - Air Oil Separator (Black) subaru-forester-xt-2014 upgrading to a 3-port solenoid

upgrading to a 3-port solenoid does require tuning

Remove the overworked factory intercooler from your 2015+ STI in favor of the Black COBB Front Mount Intercooler Kit

This catback exhaust transforms your sport compact into a tarmac-munching driving machine

34mm Height

Mishimoto proudly announces the all-new Direct-Fit Oil Cooler Kit specifically designed for the Subaru BRZ

Perrin - Subaru 02-07 WRX/STI - Air Oil Separator (Black) subaru-forester-xt-2014 upgrading to a 3-port solenoidOVERVIEW 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