13 best performance blow off valves
Performance blow-off valves (BOVs) are important components in turbocharged and supercharged engines, primarily used in the automotive industry to improve engine performance and reliability. Here's what you need to know about performance blow-off valves:
Purpose: A blow-off valve is a crucial part of the forced induction system in turbocharged or supercharged engines. Its primary function is to release excess boost pressure in the intake system when the throttle is suddenly closed, preventing damage to the engine and turbocharger components.
Operation: When the throttle plate closes, there is a sudden increase in pressure in the intake manifold. The blow-off valve opens to release this excess pressure, allowing the turbocharger or supercharger to spin down smoothly. This prevents compressor surge, which can cause damage to the turbo and lead to reduced performance.
Types:
- Atmospheric BOVs: These vent the excess pressure into the atmosphere, creating an audible "whoosh" sound. They are popular among enthusiasts for their distinctive noise.
- Recirculating BOVs: These redirect the excess pressure back into the intake system before the turbocharger's compressor inlet, resulting in a quieter operation. Recirculating BOVs are often preferred for street-driven vehicles.
Materials: Performance blow-off valves are typically constructed from durable materials such as aluminum or stainless steel to withstand high temperatures and pressures.
Adjustability: Many performance blow-off valves are adjustable, allowing users to fine-tune the valve's spring tension to match their specific boost levels and engine requirements.
Benefits:
- Improved Turbocharger Longevity: By preventing compressor surge and sudden pressure spikes, blow-off valves help prolong the life of the turbocharger.
- Enhanced Throttle Response: Properly functioning BOVs maintain consistent boost levels, resulting in better throttle response and reduced lag.
- Reliability: They contribute to the overall reliability and durability of the engine and its forced induction components.
Installation: Installing a performance blow-off valve typically requires some knowledge of the engine's intake system and boost control. It's essential to follow manufacturer guidelines and consider professional installation if you're not experienced in working with automotive induction systems.
Aftermarket Options: Many aftermarket companies offer performance blow-off valves with various designs and features, allowing enthusiasts to choose the one that best suits their needs and preferences.
Maintenance: Regular maintenance of the blow-off valve is essential to ensure it operates correctly.This may involve cleaning and inspecting the valve, as well as checking for any signs of wear or damage.
Compatibility: When choosing a performance blow-off valve, it's crucial to ensure it is compatible with your specific make and model of vehicle and that it can handle the boost levels generated by your turbocharger or supercharger.
In summary, performance blow-off valves play a vital role in maintaining the health and performance of turbocharged and supercharged engines. They help prevent damaging compressor surge, improve throttle response, and contribute to the overall reliability of the engine and its forced induction system. Choosing the right blow-off valve for your vehicle and ensuring proper installation and maintenance are essential steps for enthusiasts looking to optimize their engine's performance.
Below you can find our editor's choice of the best performance blow off valves on the market
Boomba Racing BPV/BLOW OFF VALVE RED for 2015+ Subaru WRX
Boomba Racing
- This high performance recirculating bypass valve is precision machined out of aircraft grade billet aluminum
- It features an internal brass piston design and is pressure tested to withstand up to 70psi
- Spring pre-load determines the pressure differential required across the piston before the BOV opens and releases the pressurized intake charge
- 100% recirculating and is Easy to install ;No need for re-tune
User questions & answers
| Question: | So it won’t fit a 2017 sti |
| Answer: | Thank you for choosing Rubbermaid Commercial. Our goal is to provide our customers with the highest quality and service. Their is not a dial on the vacuum. you should be able to switch to the floor nozzle and get suction. |
| Question: | Will this fit a 2019 WRX |
| Answer: | Thank you for choosing Rubbermaid Commercial. Our goal is to provide our customers with the highest quality and service . No. The 1868438 12 Inch Automatic Power Height Upright Vacuum, Black does not have a hepa filter. |
| Question: | Does this come with the hoses |
| Answer: | I bought this vacuum several years ago & purchased bags also from Amazon. |
| Question: | Does it fit with the sti engine |
| Answer: | plenty of power for shag w/floor tool, dust brush for blinds. |
Turbosmart TS-0203-1022 Kompact 25 mm Dual Port Universal Fit Blow Off Valve
Turbosmart
Product description
Dual outlet-type blow off valve. Dual port vents both to the atmosphere and back into the air intake. Ports with sequential timing allow quieter operation during normal driving, while getting all the benefits of a vent-to-atmosphere blow off valve under race conditions. Easily converted to a full atmospheric or full bypass unit by using supplied port blanking plug. Fits most cars using the factory Bosch or Denso bypass valves, also Subaru Legacy/Liberty 09-10.
- More versatility, higher performance
- OEM type fitment
- Offers superior flow
- Offers greater structural integrity under boost
- Fits most cars using the factory Bosch or Denso bypass valves and Subaru Legacy/Liberty 09-10
User questions & answers
| Question: | My car makes about 15 psi what should i run for setting |
| Answer: | yes...great product |
| Question: | Do you need the extra soft springs if I’m replacing my recirculating valve for my jackson racing c30 supercharger |
| Answer: | It's made in China. But I've had mine for about 2 years, use it regularly for auto repair, and had no problems with it. |
| Question: | Does this fit my 2009 bmw e92 335i n |
| Answer: | Yes it will, the hose is rated at 300 psi. I would recommend it. |
| Question: | Would it fit a audi tt |
| Answer: | Yes, this model does a wonderful job at both. It is automatic in height adjustment and will self adjust between the tile and the carpet. There also is a detachable wand for picking up near baseboards, etc. Very similar to Sebo vacuums that I've used in the past but priced much better. |
Torque Solution Blow Off Valve Adapter Fits Fiat 500T/Abarth/500L 2012+ / Dodge Dart 1.4L Turbo 13+ / Jeep Renegade 1.4L Turbo
Torque Solution
Product description
The Torque Solution blow off valve adapter was designed to give you that atmospheric blow off sound your looking for on your turbocharged Fiat or Dart. A simple bolt on modification that is compatible with the factory ecu and does not cause a CEL. Completely reversible.
Features:
- Great sound:
- 6061 Billet Aluminum:
- Black Anodized with "TS" logo:
- Installs in under 30 minutes
- Fits: Fiat Abarth 500L 12+ Dodge Dart 2013 1.4L
User questions & answers
| Question: | Will this affect fsctory warranty |
| Answer: | I usually try to buy products made in the U.S.A. and I only buy and consume food products produced here except I'm not sure what's in my Chinese dinner or where it came from when I order it. The answer is Not sure, but it's Certifications are: ISO9001:2008；CE； VDE；GS；UL |
| Question: | I see a few reviews regarding the screws not being long enough. Has this issue been fixed |
| Answer: | No. The product description says "Remains Flexible even at -40 F°" I haven't exposed it to a temperature that cold, but it stays flexible at least down to zero degrees Fahrenheit. (My apologies to foreigners, I don't know how many pints that is in the metric system.) |
| Question: | What is the difference between this and gfb's dv |
| Answer: | Bro, do not try to inhale directly the output of your air compressor. |
| Question: | So this will indeed fit on my 2015 Dodge Dart 1.4L turbo |
| Answer: | Yes it will with the right parts |
Turbosmart TS-0205-1131 Vee Port Pro Black Blow-off Valve
Turbosmart
Product description
(Pro - Black) Features the unique variable exhaust port system, resulting in superior venting of excess pressure, a popular choice for the street. Sleeper Series Features:Aimed at the rapidly growing number of enthusiasts who prefer their performance accessories to be inconspicuous, the Sleeper Series is designed to blend into an engine bay without attracting any unwanted attention. Anodised in a super-smooth black, the Sleeper Series comprise of Blow-Off Valves, Boost Controllers and Waste Gates.Turbosmart has launched an extensive National promotional campaign to promote the Sleeper Series. Involving leading automotive performance magazines, retail outlets and point of sale displays, it's bound to catch attention of the discerning buyer. Sleeper Series Pictures
- Package Dimensions: 13.462 cms (L) x 8.636 cms (W) x 8.382 cms (H)
- Product Type: Valve
- Package Quantity: 1
- Country Of Origin: Australia
User questions & answers
| Question: | What is the spring pressure |
| Answer: | It increased the blow off sound a good amount more so when under load and letting off. |
| Question: | Is this the most recent version with the 68mm body height |
| Answer: | Hello, Unfortunately this is not an item that we currently offer. Thank you for choosing SuperATV! ~Team SuperATV |
| Question: | Is it a v band and what size? Does it come with weld on adapter and what kind of material. The description is pretty lacking |
| Answer: | It is not 60lbs. It is an error on Amazon. |
Turbosmart TS-0203-1209 Kompact Plumb Back Blow Off Valve for Mazda/Subaru,Black
Turbosmart
Product description
Full recirculating blow off valve. The plumb back system recirculates all excess pressure back into the intake system. Great for enthusiasts not wanting to be noticed but wanting the performance and reliability benefits of a quality blow off valve. Suits Mazda speed (MPS) 3, 6, CX7, Subaru Legacy/Liberty GT, WRX MY08-current, Forester XT MY08-current.
- More versatility, higher performance
- OEM type fitment
- Offers superior flow
- Offers greater structural integrity under boost
- Suits Mazda speed (MPS) 3, 6, CX7, Subaru Legacy/Liberty GT, WRX MY08-current, Forester XT MY08-current
User questions & answers
| Question: | Description of the part says Mazda/Subaru, all reviews reference use in Subarus. Can anyone confirm that this part fits a 2007 Mazdaspeed |
| Answer: | Remove the schrader valve from the electric inflator, attach one side of the hose to the inflator and attach the schrader valve to the hose and use it. |
| Question: | can this work on a 2004 forester Subaru XT |
| Answer: | Male connectors on the ends |
| Question: | come with a rubber gasket like stock |
| Answer: | I've used it outside so far so I can't really answer that for you. |
| Question: | Does this bpv make any noise? Not looking for a bov noise but something would be nice. Just want performance but sound would be a plus |
| Answer: | I’m not sure but it sounds like the spring band came unhooked inside Kind of like a lawn mower cord recoil. |
Turbosmart TS-0203-1215 Kompact Plumb Back Blow Off Valve for Subaru
Turbosmart
Product description
Full recirculating blow off valve. The plumb back system recirculates all excess pressure back into the intake system. Great for enthusiasts not wanting to be noticed but wanting the performance and reliability benefits of a quality blow off valve. Suits Mazda speed (MPS) 3, 6, CX7, Subaru Legacy/Liberty GT, WRX MY08-current, Forester XT MY08-current.
- More versatility, higher performance
- OEM type fitment
- Offers superior flow
- Offers greater structural integrity under boost
- Suits WRX MY01-MY07, STi MY01-08, Forester 05-07
User questions & answers
| Question: | Does this fit my 2015 wrx sti |
| Answer: | Only one end swivels. You would have to connect the swivel end last is all. I use it as a whip on my Snap On 3/4" impact gun and have no trouble. Hope this helps. |
| Question: | Will this fit my 03 wrx |
| Answer: | This hose is flexible, especially in Summer. |
| Question: | Does this bpv kit come with a new gasket |
| Answer: | Polyurethane hoses are pretty flexible an usually contour to there surfaces. If the hose is stretched out straight it stays flat to the floor so it's not a tripping hazard. But if not straitened all the way it will be a trip hazard witch I'm sure you know. The best way to run an air hose is to the wall leading to a reel that can be wound back up after each use Wich eliminate’s tripping hazards. But that only works with a stationary air compressors. Hope this answers your question to the best acknowledgment |
| Question: | Will this fit my 2016 STI |
| Answer: | https://www.amazon.com/dp/B06W51VW9B or https://www.amazon.com/dp/B075R1TH9Z , they are same, just different package. |
GReddy (11501665) Blow-Off Valve
GReddy
Product description
Greddy has updated their popular blow off valve for late 2013 with a new Type FV series universal BOV. The GReddy BOV FV is a new generation of blow off valve. The unique "Floating Valve" design incorporates a revised adjustable dual spring system, while maintaining the advantages of the previous model's push valve structure and silicone diaphragm control. The improved design makes spring preload setting less dependent on the idle, while providing better response, increased valve travel, more air-flow and added resistance to premature valve lift under all conditions. Also maintained is a slimmer CNC outlet with discharge ports to draws surrounding air to amplify the blow-off sound, however this can be replaced with optional re-circulation adapters in various sizes. The BOV FV adopts the same mounting and outlet size and position as previous GReddy RZ and RS models, so retro-fitting onto existing applications is possible. All GReddy BOVs are compatible with standard GReddy Blow-off Valve flanges (flange NOT included).
- GReddy Type FV Universal BOV - Floating Design
User questions & answers
| Question: | Will this fit an audi a4 2.0T |
| Answer: | It is universal, as long as your installation location and pressure allow. |
| Question: | Will this fit a 2011 Subaru wrx |
| Answer: | it's not useful |
| Question: | Does it fit ford taurus sho |
| Answer: | No |
| Question: | Will this work on my 2018 honda accord 1.5t |
| Answer: | The product is universal, as long as the installation space permits and the pressure is appropriate, it can be used. |
Turbosmart TS-0205-1130 Vee Port Pro Blue Blow-off Valve
Turbosmart
Product description
(Pro - Blue) Features the unique variable exhaust port system, resulting in superior venting of excess pressure, a popular choice for the street. Sleeper Series Features:Aimed at the rapidly growing number of enthusiasts who prefer their performance accessories to be inconspicuous, the Sleeper Series is designed to blend into an engine bay without attracting any unwanted attention. Anodised in a super-smooth black, the Sleeper Series comprise of Blow-Off Valves, Boost Controllers and Waste Gates.Turbosmart has launched an extensive National promotional campaign to promote the Sleeper Series. Involving leading automotive performance magazines, retail outlets and point of sale displays, it's bound to catch attention of the discerning buyer. Sleeper Series Pictures
- Package Dimensions: 8.89 cms (L) x 9.144 cms (W) x 13.208 cms (H)
- Product Type: Valve
- Package Quantity: 1
- Country Of Origin: Australia
User questions & answers
| Question: | Is there a mild steel adapter for this, instead of aluminum |
| Answer: | To be clear....this is NOT a ball swivel hose where one end can flex/tilt. Both ends are fixed but one can rotate to allow connection without twisting the hose. |
IAG Blow Off Valve Elbow Compatible with Factory Bov Black Compatible with 02-07 Subaru WRX 04-15 STi
Product description
IAG Performance Replacement Blow Off Valve Elbow for 2002-07 WRX & 2004-16 STI. The IAG billet elbow is a direct replacement for the factory piece which is not available separately from Subaru. Our elbow allows the added flexibility of being able to rotate 180 from the factory position. This feature is useful when being used with an aftermarket intercooler. The IAG elbow includes a new rubber o-ring and stainless steel screws.
- IAG Performance Replacement Blow Off Valve Elbow for 2002-07 WRX & 2004-16 STI.
- The IAG billet elbow is a direct replacement for the factory piece which is not available separately from Subaru.
User questions & answers
| Question: | What diameter hose fits this |
| Answer: | Good morning. This is a 1/2" ID hose that has 1/2" MNPT ends on it with normal 1/2" fitting restrictions. Thank you. |
Turbosmart TS-0204-3001 Race Port Alloy Blow Off Valve Weld Flange
Turbosmart
Product description
While a majority of Turbosmart products are used on street cars, the design and testing procedure is identical to the high-end purpose-made racing products. Turbosmart products are subjected to a range of tests performed in the most demanding environment – the race track. Since its inception, Turbosmart has been involved in various forms of motorsport.
- Package Weight: 0.018 kilograms
- Ideal for the active enthusiast
- Widely used in performance engines
- Package Dimensions: 7.62 H x 2.54 L x 6.35 W (centimetres)
User questions & answers
| Question: | Is this a 50mm aluminum flange |
| Answer: | I think you're misunderstanding. The shorter hoses are designated as "Lead-In" hoses, not that there's lead in them. |
| Question: | What tube size is the flange notched for |
| Answer: | Hello, Thank you for reaching out! This particular product is air hose, so we would not recommend running any water through it. All of our water hoses are drinking water safe however. If you have any questions, please give us a call at 800-645-8258. Thank you, Team Flexzilla |
Torque Solution Blow Off Valve Adapter Fits Mini Cooper S 2007-2012 R56 R57
Torque Solution
Product description
The Torque Solution blow off valve adapter was designed to give you that atmospheric blow off sound your looking for on your turbocharged Mini Cooper S R56 R57 N54 1.6 Turbo. A simple bolt on modification that is compatible with the factory ecu and does not cause a CEL. Completely reversible.
Specifications:
- Great sound:
- 6061 Billet Aluminum:
- Black Anodized with "TS" logo:
- Installs in under 30 minutes:
Fite :
- Cooper S R56 2007-2010:
- Clubman S R55 2008-2010:
- Cabrio S R57 2009-2011:
- JCW Hardtop R56 2009-2014:
- JCW Cabrio R57 2009+:
- JCW Clubman R55 2009-2014:
- Cooper S R56 2011-2014:
- Clubman S R55 2011-2014:
- Cabrio S R57 2011+:
- Countryman S R60 2011+:
- Coupe S R58 2012+:
- JCW Coupe R58 2012+:
- Roadster S R59 2012+:
- JCW Roadster R59 2012+
- Fits: Mini Cooper S R56 R57 07-12
User questions & answers
| Question: | Will this fit a 2012 countryman s r |
| Answer: | Yes, this is made in China. |
| Question: | Does this come with an EU number for a smog test |
| Answer: | The outside diameter of the hose is 0.9 in. |
| Question: | What is the sound like with this? Do it create a fluttering sound when it releases? Also, do it come with instructions? Thanks |
| Answer: | Definitely not. Not even close. |
| Question: | If a buy that part i no need no cap no sprin or something like that |
| Answer: | Best way to test the pressure would be to install a pressure gauge at the end of the air tool and then connect the hose. Run the compressor and use the tool while keeping an eye on the pressure gauge to see how much pressure you are really getting. That will help determine if you are getting adequate pressure. If not, there may be a few things causing that pressure drop (hose too long, clog somewhere in the hose or the compressor not having enough CFM to power all tools) I have attached a link for more information. http://www.tcservice.com/tech/air-press/air-press.html |
Boomba Racing Red Bolt-On Blow Off Valve BOV for 2016+ Honda Civic 1.5L Turbo
Boomba Racing
Product description
For CVT (automatic) as well as 6 Speed (manual)
No aftermarket tuning required. Will work on stock tune or aftermarket tunes. This piece does not throw any check engine lights, does not cause any turbo lag, and does not make the vehicle stutter between shifts.
Replace your factory BPV which is made of cheap rubber and plastic and known to rip and leak boost. This high performance VTA (vent to atmosphere) blow-off valve is precision machined out of aircraft grade billet aluminum. It features an internal brass piston design and is pressure tested to withstand up to 100psi, allowing it to compliment even the most aggressive turbo builds. Spring pre-load determines the pressure differential required across the piston before the BOV opens and releases the pressurized intake charge. Designed to be a replacement for the OEM bypass valve and is available in 4 different colors.
Installation is simple (direct replacement to stock) and all necessary hardware is included.
- For CVT (automatic) as well as 6 Speed (manual).
- No aftermarket tuning required. Will work on stock tune or aftermarket tunes.
- Installation is simple (direct replacement to stock) and all necessary hardware is included.
- Replace your factory BPV which is made of cheap rubber and plastic and known to rip and leak boost.
User questions & answers
| Question: | Will this fit if I have a 2019 civic 1.5 hatch lx non si will this fit |
| Answer: | No this does not come with a filter. Everything shown in the photo is what is included with this product. |
| Question: | Will this work with my stock 2019 civic si |
| Answer: | You would need to buy a seperate plug. We recommend running it the same way the factory is set up. |
| Question: | Is this BOV good for smog test |
| Answer: | If you are referring to the two hoses, those are extras in case you need to repair a section of the factory line. |
| Question: | Work for 2019 hatchback sport with no tune |
| Answer: | Yes |
Boomba Racing Black Blow Off Valve Adapter for 2017+ Ford F-150 Raptor 3.5 Ecoboost
Product description
This high performance adapter mounts between the OEM bypass valve/solenoid and the flange on the intercooler, causing the unused charge air to vent to atmosphere (VTA) giving off the well known, but distinct sound all turbo owners know and love! The adapter bolts right in with the included longer bolts, no other modifications or tuning are required. Precision CNC machined out of high quality aircraft grade billet aluminum and available in 4 different colors
Installation is simple and all mounting hardware is included.
Only for use with 2017+ Raptor using the 3.5 Ecoboost.
- Installation is simple and all mounting hardware is included.
- Only for use with 2017+ Raptor using the 3.5 Ecoboost.
- This high performance adapter mounts between the OEM bypass valve/solenoid and the flange on the intercooler.
- Precision CNC machined out of high quality aircraft grade billet aluminum.
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