Injen Cold Air Intake Polished WRX / STI (2008-2014) Mazda The spring of the blow

The spring of the blow off valve features an adjustable cap which allows you to adjust release pressure settings

It is extremely heavy

and is designed to be used with a factory style up-pipe

throaty exhaust tone

(2) x M8 Low Profile Stainless Steel Socket Head Cap Screws

Injen Cold Air Intake Polished WRX / STI (2008-2014) Mazda The spring of the blowThe Speed Pro series intake systems from Injen for the 2002 2007 Subaru WRX STI feature special tuning technology for optimal performance gains and a safe A F ratio. The patent pending technology behind the Mega Ram system constricts the air intake at one point, and then maximizes airflow at other points to supply the maximum amount of air to the intake manifold. Injen SP intakes are also specifically tuned for you vehicle, engine, and engine control