Perrin CARB Approved Cold Air Intake - Subaru WRX/STi BLE This creates less back pressure

This creates less back pressure at the exhaust valves and better overall breathing of the engine

Subaru engines run at the hotter end of operation around 200 degrees F

Available in 91

a CFD-designed velocity stack leads to an unique air flow straightener grid designed to smooth the incoming air flow as it passes the Mass Air Flow sensor for precise readings

By using this hard anodized aluminum "GReddy Magdrain" plug

Perrin CARB Approved Cold Air Intake - Subaru WRX/STi BLE This creates less back pressureVehicle Fitment: 2008 2014 Subaru WRX 2008 2015 Subaru STi Description: Increase horsepower and style under your hood. The PERRIN Performance intake system uses proper MAF alignment and plumbing size, which are crucial to maintain proper air fuel ratios and prevent check engine lights that plague competitors. Perrin intakes are constructed from aluminum tubing which is precision CNC mandrel bent for consistent and perfect fitting parts. Their MAF