Turbosmart Plumb Back BOV Black WRX (2002-2007) STI (2004-2014) BMW Injen has seen gains of

Injen has seen gains of over 7 HP and 7 ft/lbs of torque

5L WRX/STI/LGT

1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci

as well as with our without the Airbox

improved tracking and the ability to dial in more camber for weekend track events

Turbosmart Plumb Back BOV Black WRX (2002-2007) STI (2004-2014) BMW Injen has seen gains ofThe Plumb Back for the Subaru WRX STI Forester is a high performance fully recirculating BOV, all released pressure is vented back into the intake system. Ideal for cars with sensitive AF meter systems and off road applications as the fully sealed design of the Plumb Back prevents any foreign matter from entering the system. This plumb back comes with a Subaru flange making installation easy on your Subaru WRX STI. FITMENT: Subaru STI 2004 2014 Subaru