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COBB Tuning - Subaru LF BPV WRX 2015-2021, FXT 2014-2018
Part #: 745670
$405.00 For
Free Shipping! *to continental U.S. only
Featured Videos
-
Video Description:In this video, we'll show you how recirculating valves and blow off valves are similar, and how they're different. Highlights include:
*At 0:16, we tell you the functions of each, as well as the pros and cons of each type of valve. -
Video Description:Want to know if you should get a blow off valve for your vehicle? Check out this episode of Andy's Auto Sport TV to learn more!
Fits On:
2015-2021 Subaru Impreza
Description:
COBB Tuning - Subaru LF BPV WRX 2015-2021, FXT 2014-2018
This part is legal for sale and use on Emissions Controlled Vehicles in all 50 states when used in accordance with the manufacturer's application guide because it has a California Air Resources Board (CARB) Executive Order (EO) number: D-660-36 & D-660-83
The COBB LF BPV is a compact and lightweight by-pass valve that is capable of holding very high boost pressure without leaking. Its updated design reduces control volume by 30% allowing for extremely fast venting of boost when actuated. Innovative engineering and precision manufacturing result in a compact package able to fit in the confines of a tight engine bay. Due to the low weight of the components, the moving parts in the LF BPV have less inertia and can respond faster than heavier components in other bypass valves. This updated design uses a Banjo-fitting vacuum port which provides 360 degree adjustability of hose routing. This results in a simpler install and less potential leak points than the NPT ports. This new design also includes a piston o-ring seal that is twice the diameter of the old design allowing more seal compression and reduced wear. Adjustability of the spring seat is no longer needed due to the updated spring and seal design which provides a 60% increase in clamping force at peak boost while maintaining similar operation at idle and transient loads.
Note: This is an updated version of the original 745665 LF BPV that now includes a different internal spring.
Original Spring (uncoated)
Free length: 3.5 inch
Rate: 7.4 lbf/in
Bench cracking vacuum installed in LF BPV: -5.7 psi
New Spring (yellow)
Free length: 2.25 inch
Rate: 40.5 lbf/in
Bench cracking vacuum installed in LF BPV: -6.7 psi
COBB Tuning - Subaru LF BPV WRX 2015-2021, FXT 2014-2018
This part is legal for sale and use on Emissions Controlled Vehicles in all 50 states when used in accordance with the manufacturer's application guide because it has a California Air Resources Board (CARB) Executive Order (EO) number: D-660-36 & D-660-83
The COBB LF BPV is a compact and lightweight by-pass valve that is capable of holding very high boost pressure without leaking. Its updated design reduces control volume by 30% allowing for extremely fast venting of boost when actuated. Innovative engineering and precision manufacturing result in a compact package able to fit in the confines of a tight engine bay. Due to the low weight of the components, the moving parts in the LF BPV have less inertia and can respond faster than heavier components in other bypass valves. This updated design uses a Banjo-fitting vacuum port which provides 360 degree adjustability of hose routing. This results in a simpler install and less potential leak points than the NPT ports. This new design also includes a piston o-ring seal that is twice the diameter of the old design allowing more seal compression and reduced wear. Adjustability of the spring seat is no longer needed due to the updated spring and seal design which provides a 60% increase in clamping force at peak boost while maintaining similar operation at idle and transient loads.
Note: This is an updated version of the original 745665 LF BPV that now includes a different internal spring.
Original Spring (uncoated)
Free length: 3.5 inch
Rate: 7.4 lbf/in
Bench cracking vacuum installed in LF BPV: -5.7 psi
New Spring (yellow)
Free length: 2.25 inch
Rate: 40.5 lbf/in
Bench cracking vacuum installed in LF BPV: -6.7 psi
Cobb Tuning has long been known as one of the premiere Subaru and Mazda tuning companies in the nation, so when it decided to expand its research and development to other makes of performance cars, enthusiasts took notice. Cobb's now-famous AccessPORT ECU management units include optimized maps for popular engine upgrades, but are completely customizable using Cobb's AccessTUNER software, making them the perfect choice for getting the most out of your car's potential. The company also has many other performance parts for popular Japanese and European cars, all of the same high quality that has made Cobb such a contender in the performance aftermarket.
Featured Videos
-
Video Description:In this video, we'll show you how recirculating valves and blow off valves are similar, and how they're different. Highlights include:
*At 0:16, we tell you the functions of each, as well as the pros and cons of each type of valve. -
Video Description:Want to know if you should get a blow off valve for your vehicle? Check out this episode of Andy's Auto Sport TV to learn more!
Q: Are blow off valves made to fit a specific vehicle? Or are they universal?
A: Blow-off valves are universal for all turbocharged vehicles.
Q: How do you install a blow off valve?
A: Blow-off valves are bolted to a steel/aluminum flange. The flange must be welded onto your intake piping.
Q: Is there any reason for me to buy a blow off valve if I don't have a turbo kit?
A: Naturally aspirated cars will not benefit from a blow-off valve, only turbocharged or supercharged vehicles will.
A: Blow-off valves are universal for all turbocharged vehicles.
Q: How do you install a blow off valve?
A: Blow-off valves are bolted to a steel/aluminum flange. The flange must be welded onto your intake piping.
Q: Is there any reason for me to buy a blow off valve if I don't have a turbo kit?
A: Naturally aspirated cars will not benefit from a blow-off valve, only turbocharged or supercharged vehicles will.
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