Perrin Air Oil Separator for TMIC Black WRX / STI (2002-2007) BMW - Dyno-proven gains of up

- Dyno-proven gains of up to 57 whp and 52 wtq with catted downpipe and Mishimoto Subaru WRX Tuning Kit

the rubber hardens and begins to crack

be warned that in cabin drivetrain noise will increase slightly due to the nature of eliminating rubber OEM diff carriers

-Mishimoto Lifetime Warranty

Perrin Air Oil Separator for TMIC Black WRX / STI (2002-2007) BMW - Dyno-proven gains of upPerrin Air Oil Separators for the WRX STI are a great product if you want to increase your intercooler efficiency and stopping oil from entering the intake. By reducing the amount of oil that is entering the intercooler and intake system you will have a cleaner more efficient motor and less engine damaging detonation. The Air Oil separator is a great item to have on highly used daily driven cars or complete race cars. Black or red the AOS are a clean