{"product_id":"tial-sport-qr-series-recirculating-blow-off-valve-34mm-all-spring-rates-colors","title":"TiAL Sport QR-Series Recirculating Blow-Off Valve (34mm) – All Spring Rates \u0026 Colors","description":"\u003cdiv class=\"sl-desc\"\u003e\n\u003ch2\u003eOVERVIEW\u003c\/h2\u003e\n\u003cp\u003eThe QR is the recirculating version of TiAL Sport's Q blow-off valve — the same 51 mm valve and billet body, but the released charge air is routed back into the intake tract through a discharge tube instead of venting to atmosphere. TiAL designs it for MAF-equipped engines and any setup that needs to recirculate the discharge, where venting metered air would upset the fueling.\u003c\/p\u003e\n\u003cp\u003eIt bolts to any standard TiAL BOV flange without welding. This listing covers the 34 mm discharge version, offered in five anodized colors and six spring rates. Choose the spring by idle vacuum, not boost pressure.\u003c\/p\u003e\n\u003ch2\u003eSPECS\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eValve size: 51 mm (1.98 in)\u003c\/li\u003e\n\u003cli\u003eDischarge: 34 mm recirculation outlet\u003c\/li\u003e\n\u003cli\u003eMass flow (recirculated): 31 lb\/min at 30 psi, full stroke, per TiAL's flow table\u003c\/li\u003e\n\u003cli\u003eSpring range: 2–12 psi; springs offered: −2, −6, −8, −10, −11 and −12 psi\u003c\/li\u003e\n\u003cli\u003eBody and internals: CNC-machined aluminum alloy; hard-anodized valve stem and guide\u003c\/li\u003e\n\u003cli\u003eValve seal: high-temperature O-ring clamped in place so it cannot stick to the seat and pull out\u003c\/li\u003e\n\u003cli\u003eDiaphragm: high-temperature silicone-reinforced\u003c\/li\u003e\n\u003cli\u003eAir fitting: machined aluminum banjo fitting with oversized 10 mm hose barb\u003c\/li\u003e\n\u003cli\u003eWeld flange: aluminum, mild steel or stainless steel, cut for 2.5 in pipe\u003c\/li\u003e\n\u003cli\u003eColors: Silver, Blue, Black, Purple, Red\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePARTS INCLUDED\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eQR-Series recirculating blow-off valve assembly with the selected spring\u003c\/li\u003e\n\u003cli\u003eAir fitting set\u003c\/li\u003e\n\u003cli\u003eWeld flange\u003c\/li\u003e\n\u003cli\u003eV-band clamp assembly\u003c\/li\u003e\n\u003cli\u003eWeld flange O-ring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTECH RESOURCES\u003c\/h2\u003e\n\u003ch3\u003eAdditional Parts Required\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelding.\u003c\/strong\u003e The supplied weld flange must be welded into the charge pipe unless your pipe already carries a TiAL Q\/QR flange. Spare flanges, clamps and O-rings: \u003ca href=\"\/products\/tial-sport-q-qr-bov-flanges-clamps-o-rings-housings\"\u003eTiAL Sport Q \/ QR BOV Flanges, Clamps, O-Rings \u0026amp; Housings\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA recirculation route.\u003c\/strong\u003e The 34 mm discharge must be plumbed back into the intake tract ahead of the turbo, after the MAF.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVacuum signal line.\u003c\/strong\u003e Run from a source downstream of the throttle body; see the routing guide.\u003c\/li\u003e\n\u003cli\u003eNeed a different discharge size? See \u003ca href=\"\/products\/tial-sport-qr-series-recirculating-blow-off-valve-1-0-1-5-29mm-discharge\"\u003eTiAL Sport QR-Series Recirculating BOV – 1.0\", 1.5\" \u0026amp; 29mm Discharge\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2307\/8117\/files\/tial-sport-qr-34mm-bov-drawing.pdf?v=1787624341\"\u003eTiAL Sport QR-Series 34mm product drawing (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2307\/8117\/files\/tial-sport-bov-routing-guide.pdf?v=1787624341\"\u003eTiAL Sport BOV routing and plumbing guide (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2307\/8117\/files\/tial-sport-bov-static-testing.pdf?v=1787624341\"\u003eTiAL Sport BOV static bench-testing instructions (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2307\/8117\/files\/tial-sport-bov-faq.pdf?v=1787624341\"\u003eTiAL Sport BOV FAQ (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal part: fits any turbocharged or supercharged application with a charge pipe carrying a standard TiAL Q\/QR flange.\u003c\/li\u003e\n\u003cli\u003eQR valves are built to order and lead times vary. Confirm availability with \u003ca href=\"\/pages\/contact-us\"\u003eSpeed Logic\u003c\/a\u003e before ordering.\u003c\/li\u003e\n\u003cli\u003ePrice is for parts only; labor and fabrication are not included.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePART NUMBER\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e004926\u003c\/strong\u003e — QR 34mm, −2 psi, Silver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004925\u003c\/strong\u003e — QR 34mm, −2 psi, Blue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004924\u003c\/strong\u003e — QR 34mm, −2 psi, Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004923\u003c\/strong\u003e — QR 34mm, −2 psi, Purple\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004922\u003c\/strong\u003e — QR 34mm, −2 psi, Red\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004931\u003c\/strong\u003e — QR 34mm, −6 psi, Silver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004930\u003c\/strong\u003e — QR 34mm, −6 psi, Blue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004929\u003c\/strong\u003e — QR 34mm, −6 psi, Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004928\u003c\/strong\u003e — QR 34mm, −6 psi, Purple\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004927\u003c\/strong\u003e — QR 34mm, −6 psi, Red\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004936\u003c\/strong\u003e — QR 34mm, −8 psi, Silver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004935\u003c\/strong\u003e — QR 34mm, −8 psi, Blue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004934\u003c\/strong\u003e — QR 34mm, −8 psi, Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004933\u003c\/strong\u003e — QR 34mm, −8 psi, Purple\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004932\u003c\/strong\u003e — QR 34mm, −8 psi, Red\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004941\u003c\/strong\u003e — QR 34mm, −10 psi, Silver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004940\u003c\/strong\u003e — QR 34mm, −10 psi, Blue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004939\u003c\/strong\u003e — QR 34mm, −10 psi, Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004938\u003c\/strong\u003e — QR 34mm, −10 psi, Purple\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004937\u003c\/strong\u003e — QR 34mm, −10 psi, Red\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004946\u003c\/strong\u003e — QR 34mm, −11 psi, Silver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004945\u003c\/strong\u003e — QR 34mm, −11 psi, Blue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004944\u003c\/strong\u003e — QR 34mm, −11 psi, Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004943\u003c\/strong\u003e — QR 34mm, −11 psi, Purple\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004942\u003c\/strong\u003e — QR 34mm, −11 psi, Red\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004951\u003c\/strong\u003e — QR 34mm, −12 psi, Silver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004950\u003c\/strong\u003e — QR 34mm, −12 psi, Blue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004949\u003c\/strong\u003e — QR 34mm, −12 psi, Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004948\u003c\/strong\u003e — QR 34mm, −12 psi, Purple\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e004947\u003c\/strong\u003e — QR 34mm, −12 psi, Red\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eVEHICLE APPLICATIONS\u003c\/h2\u003e\n\u003ctable class=\"va-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Tial","offers":[{"title":"-2 psi \/ Silver","offer_id":52563988316440,"sku":"004926","price":287.32,"currency_code":"USD","in_stock":true},{"title":"-2 psi \/ Blue","offer_id":52563988349208,"sku":"004925","price":287.32,"currency_code":"USD","in_stock":true},{"title":"-2 psi \/ 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