TiAL Sport QR Blow Off Valve (34mm Outlet)




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Genuine TiAL QR blow off valve is a recirculating valve based on the popular, high performance Q. This QR valve features a 34mm (1.34") recirculating outlet compatible with most DSM, Evolution, 3000GT/Stealth and some Subaru models. Available in all 5 TiAL BOV colors silver, red, blue, purple and black.

Shipping Times: 1-14 Days
We try to keep the most popular kits in stock, but if you need something quick and want to confirm, just give us a call directly!

What Spring Pressure Do I Need?
The spring pressure is determined by your vacuum at idle. It is not related to how much boost you want to run. Check what your vacuum is at idle and select the matching spring.

• 2 PSI (For Supercharger Only)
• 6 PSI (-8 to -11 in/Hg)
• 8 PSI (-12 to -15 in/Hg)
• 10 PSI (-16 to -19 in/Hg)
• 11 PSI (-20 to -21 in/Hg
• 12 PSI (-22 to -24 in/Hg)

Weld Flange Options:
Includes one weld flange for your intercooler pipe cut to mate to 2.5" tube. Available options are aluminum, mild steel and stainless steel.

Specs & Features:
• 34mm (1.34") Recirculating Outlet Flange
• Uses the standard TiAL V-band flange and can be converted into a standard Q BOV by swapping the bottom piece.
• The body and all internal components are CNC-machined from 6061 aluminum alloy.
• Large 1.98 in (50.5mm) valve.
• The V-Band design aluminum mounting clamp gives a very clean and unique appearance. The clamp uses Stainless Steel hardware for a long lasting, corrosion-free appearance.
• The valve seal utilizes a Viton O-ring that is clamped in place to prevent the possibility of sticking to the seat and pulling out. The valve stem and guide are Teflon-lubricated, hard anodize-coated for wear resistance.
• The Blow Off Valve also comes with a TiAL machined aluminum banjo-type air fitting and bolt, with over-sized 10mm hose barb for quick actuator response. The actuator has a high temp silicone Nomex-reinforced diaphragm for long life.
• Color anodized aluminum options (Silver, Red, Blue, Purple, Black).

(1) QR Assembly with 34mm Return Fitting
(1) TiAL V-Band Clamp
(1) V-Band Weld Flange
(1) TiAL Air Fitting
(1) High Pressure O-Ring

See more TiAL Products
See more TiAL Products
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Customer Reviews

Based on 7 reviews
Wesley Gard

TiAL Sport QR Blow Off Valve (34mm Outlet)

Evofreak7 (Chicago, IL, US)
Tial qr bov

I installed the tial qr bov to my 2015 evo x and made an amazing sound. The install was easy but my only issue is when Im driving and my throttle is at about 75 % and you let of the throttle right away it bugs up not sure if the spring tension on the bov was too strong. Will check again if it gets worst.

JUAN SANCHEZ (Santo Domingo Este, 32, DO)

Perfect fitment and performance on my evo x 2012 gsr thx!

Casey Boggs (Olin, NC, US)
Tial BOV

Will this BOV bolt right into the ETS intake? Will need to do anything to get it able?

Justin (Stockton, CA, US)

Stm answered all me questions??? Very very helpfull . Beautifull product and great no problems shipping.

Glad we were able to help you out and answer your questions, Justin! Thank you for shopping with us.

Cancer and Reproductive Harm