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Turbocharger Servicing

Did you know that we also service and upgrade all makes and models of Turbochargers? Our facility was designed from the ground up to service turbochargers with the type of quality you would expect on a manufacturing level.

Contact our sales and service team for more information at (813)-443-0531.


Tial Q Blow Off Valve BLACK w/ 8PSI SPRING

TiAL Sport


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Product Description

The TiAL® Q Blow Off Valve is the first revision of the original TiAL® BOV and it will bolt right up to any standard TiAL® flange, so no re-welding is needed. This is a universal blow off valve for use on any turbo-charged or super-charged application (Paxton, Vortec, etc.). With a TiAL® 50mm Blow Off Valve in place you can improve the long term durability and reliability of your turbocharger by preventing compressor surge during closed throttle and high vacuum conditions. 

This Blow Off Valve features a large, 1.98 in (50.5mm) valve. The valve seal utilizes a high pressure 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 and hard anodize-coated for wear resistance. 

The body and all internal components are CNC-machined from 6061 aluminum alloy with the option for a stainless steel, mild steel or aluminum V-Band flange. The aluminum housing features an anodized finish available in silver, black, red, blue or purple to customize the BOV's presence in your engine bay. You also have the option to choose a spring rate, this should be based on your engines vacuum reading at operating temperature and idle speed, see the chart below for more information regarding this. Additional TiAL BOV Springs are available in case you plan on modifications down the road that will affect your engines vacuum pressure. Each TiAL® Q BOV also includes an aluminum V-Band clamp with stainless steel hardware for a long lasting, corrosion free appearance. 

The Q Blow Off Valve also comes with TiAL's own machined aluminum banjo-type air fitting and bolt, with an over sized 10mm hose barb for quick actuator response. The actuator has a high temp silicone Nomex-reinforced diaphragm for long life.

    What's Inside the Box?
  • TiAL® Q BOV Assembly
  • TiAL® V-Band Clamp
  • TiAL® V-Band Weld Flange
  • TiAL® High Pressure O-Ring
  • TiAL® Air Fitting
TiAL® Q Spring Rates
Spring ColorSpring RateUse for Engine Vacuum Reading
Green 2 psi (.14 bar) SUPERCHARGERS ONLY
Black 6 psi (.41 bar) -8 to -11 in/Hg
White 8 psi (.55 bar) -12 to -15 in/Hg
Un-painted 10 psi (.69 bar) -16 to -19 in/Hg
Yellow 11 psi (.76 bar) -20 to -21 in/Hg
Brown 12 psi (.83 bar) -22 to -23 in/Hg

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Shipping & Returns

To edit this page simply login to the control panel, click the Website Content tab and choose the View Web Pages option. Click Edit next to the Shipping & Returns page and you can change this text. A sample returns policy is shown below which you can edit as needed.

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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Boost Lab, Inc
8602 Temple Terrace Hwy
Suite D-12
Tampa, FL 33637

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Our experienced team is there to help you every step of the way. We are happy to answer any technical questions you may have!

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TiAL Sport
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