Subaru WRX Blow off Valve Kits will allow you to hear more of a "whooshing" noise when you let off the throttle. Subaru's usually run best on the factory valve. Fully Atmospheric valves will be the loudest, whereas recalculating valves will give a smoother throttle response.
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APS WRX STi Blow off Valve Top Mount Intercooler (BOV) With its huge capacity the APS blow off valve gives you the ultimate in turbocharger durability and improved turbo response particularly during gear changes. A mammoth 1.375" (34 mm) internal bore siz... more >>>
$249.00
Product Reviews
marshall boulware - 10/22/2008 The best bov ive ever used. The performance exceeded my expectations. Other bov's that i h...
HKS 2008 STi SSQV Blow off Valve/ BOV HKS Super Sequential Blowoff Valves (SSQV) are dual stage pull type relief valves that by design do not leak under high boost conditions or under idle vacuum and is actuated by pressure alterations to... more >>>
$365.00 $339.45
HKS Special Edition Black SSQV Universal Valve BOV HKS Super Sequential Blowoff Valves (SSQV) are dual stage pull type relief valves that by design do not leak under high boost conditions or under idle vacuum and is actuated by pressure alterations to... more >>>
$275.00 $255.75
TurboSmart 2008 STi Dual Port Blow Off Valve BOV Stronger, more durable, adjustable and capable of withstanding much higher boost levels than the factory item, the new MY08STi Dual Port is an ideal bolt-on performance replacement for anyone intendin... more >>>
$359.00 $323.10
Tial Alpha Q Bypass valve For use on turbo-charged and super-charged applications (Paxton, Vortec, etc.). The body and all internal components are CNC-machined from 6061 aluminum alloy. It features a large 1.98 in (50.5mm) val... more >>>
$325.00 $292.50
Tial Q Blow Off Valve New for 2008 is the first revision of the nine year old original TiAL BOV. The Q bolts right up to any standard TiAL flange so you can upgrade without having to re-weld. Through countless hours of R&D... more >>>