Turbosmart® - Blow-Off Valve

52 reviews|Item # 450450517
$313.64 - $332.09
Varies - Depends on Product Options
2009 Subaru Forester
Fits Following Model(s):
  • XT / XT Limited
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    Product Details

    Subaru Forester XT / XT Limited 2009, Blow-Off Valve by Turbosmart®. Completely redesigned for 2011, this product by Turbosmart is 46% lighter and 25% smaller than the previous model. Designed to provide greater performance through faster turbo spool-up from idle and reduced turbo lag between gears, it's tested and proven under the most demanding racing conditions to ensure the highest level of performance.



    • Designed for use on large-capacity turbocharger systems and high-horsepower engines
    • Brings maximum possible performance through faster turbo spool-up from idle and reduced turbo lag between gears
    • Provides an excellent way of reliably controlling boost
    • Unique collar design
    • Smaller and lighter than the previous model
    • Supplied with vacuum fittings, weld flange, and V-band assembly

    When the throttle closes and the intake system is under pressure, the high-pressure air entering the motor will bump into the closed throttle plate and a pressure wave will travel back to the turbocharger. As a result, the compressor wheel stalls and slows down very quickly resulting in premature bearings wear and shortened turbo’s lifespan. It means that the turbo will take longer to spin up the next time when the throttle is opened. A blow-off valve (BOV), or a vacuum-actuated valve designed to release the air to the atmosphere, releases pressure from the intake tract of a turbo car when the throttle closes.

    Turbosmart offers you the Race port blow-off valve (BOV) that is redesigned from the Highest-flowing BOV and now features a unique collar design. It means the product is 46% lighter and 25% smaller than the product it replaces, while providing greater performance through faster turbo spool-up from idle and reduced turbo lag between gears. The product is designed for use on large-capacity turbocharger systems and high-horsepower engines. In addition, it's supplied with vacuum fittings, weld flange, and V-band assembly.

    Turbosmart® was founded in 1997 with a line of just two products. Today it's a well-known manufacturer of products developed to satisfy all performance and reliability requirements under the most competitive racing conditions. Every Turbosmart product is manufactured using the tried and proven formula of innovative design, full quality control, and stringent testing. More hand-crafted than mass-produced, Turbosmart products quickly won acceptance and popularity within the performance community for their unrivaled quality and reliability and had received a number of praises from international motoring press and collected awards at various automotive shows.

    Warranty Information

    Limited Warranty: Turbosmart warrants its products to be free from defects in material and workmanship under normal use and if properly installed for a period of one year from date of purchase. If found to be defective, it will be replaced or repaired if returned prepaid along with proof of date of purchase. This shall constitute the sole remedy of the purchaser and the sole liability of Turbosmart to the extent permitted by law, the foregoing is exclusive and in lieu of all other warranties or representations whether expressed or implied, including any implied warranty of merchantability or fitness. In no event shall Turbosmart be liable for special or consequential damages. This warranty is only valid on products purchased from Turbosmart Authorized Dealers and/or Distributors.

    Magnuson-Moss Warranty Act:
    Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

    Product Reviews


    Every Customer can leave a review about our service and the product that was purchased. In order to leave your review for your new product, please follow the link in the email you receive after completing your purchase. You can rate appearance, ease of installation, price/value and product quality.

    Turbosmart® - Supersonic Black Blow-Off Valve
    Turbosmart® - Blow-Off Valve
    Average Rating: 5 of 5
    5 of 5
    This Blow-Off Valve is the best upgrade one can make to a turbocharged car
    This Blow-Off Valve is the best upgrade one can make to a turbocharged car: the OEM Blow-Off Valve is made with silence in mind, so to achieve this they bleed pressure which hurts performance while the turbo is building up pressure at low engine speeds. Noise with the recycle mode (not to Atmosphere) is really low, it can only be heard when releasing the gas pedal on a high gear. After testing and making calculation the new BOV gave my CX7 a more power and torque boost in the order of 4% and 10% for each, a lot more after tuning the ECU.
    Posted by (Livonia, MI) / 2010 Mazda CX-7
    Was this review helpful for you? Yes
    5 of 5
    Perfect Fit
    Fits perfect on my Subaru 2012 WRX, it very easy to install. Turbosmart even has a video to walk you through step by step on how to install it. Spring is easy to adjust. Best of both worlds running this 50/50 port: nice Blow-Off Valve plus afterfire sound on 4k+ RPM, and quietly recirculated for under 3k RPM. Most importantly no idling issues for the sensitive stock ECU. Also, Turbosmart is the brother company of TurboXS. Will Recommend!
    Posted by (St.catharines, ON) / 2012 Subaru WRX
    Was this review helpful for you? Yes
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