Subaru Impreza BOV Supersonic VTA Blow Off Dump Valve 01-11 WRX STI DIRECT FIT

Subaru Impreza Direct Fit 'Vent to Atmosphere' Dump Valve - SILVER

Specifically designed for the Subaru boxer' blow-off valve is a direct fit onto the Impreza intercooler where the existing OEM re-circulating valve is located. 

The Blow-Off valve (BOV) is a pressure relief device on the intake tract to prevent the turbo's compressor from going into surge. When the throttle is closed rapidly, the airflow is quickly reduced, causing flow instability and pressure fluctuations. Surge can eventually lead to thrust bearing failure due to the high loads associated with it. Blow-Off valves use a combination of manifold pressure signal and spring force to detect when the throttle is closed. When the throttle is closed rapidly, the BOV vents boost in the intake tract to atmosphere to relieve the pressure, helping to eliminate surge

Features:

- CNC Machined 6061 Aluminium head
- 304 Polished Stainless steel base
- 1" bore and 2" diameter housing for increased airflow
- Supersonic trumpet for increased 'woosh' volume
- Increases the life span of your turbo charger
- Rated up to 40psi of boost
- Vent to atmosphere (OEM re-circulating pipe must be removed)
- Adjustable head to move the vacuum pipe where YOU want it

Brand New and Boxed.

Fits:

Subaru Impreza Newage - WRX+STI 2001-2011 (Bug, Blob, Hawk and Hatch)

May fit Classics, but check your vehicle has the correct mounting bolt pattern - 10.5cm Diamond fit