COBB XLE Blow Off Valve

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COBB Tuning announces the availability of the XLE Blow Off Valve (BOV) for turbo equipped Subarus and the MAZDASPEED3. The COBB XLE BOV can be configured to operate in multiple modes using simple hand tools. Innovative engineering and precision manufacturing result in a compact package capable of holding high levels of boost consistently and reliably.

The COBB XLE BOV can operate in one of three modes with simple adjustments. Full recirculation is achieved by plumbing the primary output back into the intake pre-turbo with the auxiliary port closed. Full atmosphere is possible by opening both the primary port and auxiliary port to atmosphere. A hybrid mode is also possible by pluming the primary port into the intake and leaving the auxiliary port open to atmosphere, causing much of the air to recirculate to retain driveability, while still creating an audible exhaust of some of the boost pressure.

Spring preload determines the pressure differential across the BOV piston required before the BOV opens and releases the pressurized intake charge. The COBB XLE BOV can be adjusted by loosening the locknut and turning the hex-head shaft clockwise for more preload or counter-clockwise for less preload. Once preload is set, the locknut is retightened and ensures the adjustment is secure.

bov3web.jpgMaterials used to construct the COBB XLE BOV ensure ease of maintenance and long service life. The mounting flange, body, vent cover and piston are constructed of 6061 T6 aluminum, the spring seat is made from 303 stainless steel and the primary outlet is polished cast aluminum. O rings are used around the piston and on the mounting flange to ensure optimal sealing. The valve body is hard anodized for strength and corrosion resistance. The piston is dry filmed lubricated, providing enduring maintenance free service.

COBB Tuning is offering the XLE BOV for the following applications:

    YEAR MAKE MODEL PART # PRICE
2004 – 2009 Subaru Impreza STi 712650 $295.00
2002 – 2007 Subaru Impreza WRX 712650 $295.00
2008 – 2009 Subaru Impreza WRX 724650 $295.00
2005 – 2009 Subaru Legacy 724650 $295.00
2004 – 2009 Subaru Forester XT 712650 $295.00
2009 Subaru 2.5GT 724650 $295.00
2006 – 2009 Mazda MAZDASPEED3 771650 $295.00

The COBB XLE BOV is a limited edition piece and will not be available for long. Please call or visit one of the following Premier COBB Tuning facilities to order your COBB Limited Edition Blow Off Valve today:

COBB Tuning Plano (214-291-3020)
1200 Placid Ave. Suite 550
Plano, TX 75074

COBB Tuning Surgeline (503-670-9500)
16580 SW 72nd Ave
Portland, Oregon 97224


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