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Holley replacement power valves are an important component in the power enrichment circuit of Holley's performance carburetors. They operate by using engine vacuum to control their opening and closing rate. When they open, additional fuel is supplied to the main system during heavy load or under full power situations to eliminate hesitation and bogging--ensuring the smooth delivery of power without any drivability concerns. They're available in many different vacuum ranges to time the system's operation to your specific requirements, and they come in your choice of single-stage, two-stage, and high-flow designs. A gasket is included.
( 131 )
$15.88
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$31.79
$14.29
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$28.61
On Sale
Holley carburetor accelerator pump check valves are made to fit most Holleys using a 30cc or 50cc accelerator pump. They feature the "umbrella" design most commonly used in performance-style carburetors.
( 10 )
$18.99
$17.09
On Sale
FUELAB high-flow, one-way check valves are designed to deliver maximum flow with minimal restriction and pressure drop. Featuring -6 AN, -8 AN, and -10 AN male inlets/outlets, 350 gph flow capacity, cross fuel compatibility, and billet aluminum construction, these advanced engineered FUELAB valves allow for easy installation and prevent flow back after pump shut down. The check valves are rebuildable, have fluorosilicone seats and seals, and a maximum pressure rating of 200 psig.
( 5 )
$83.00
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$91.00
$74.70
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$81.90
On Sale
These Quick Fuel FOUR DOOR power valves feature an exclusive in-house design that has become the preference of professional race teams in virtually every circuit where carburetors are used. They have a greater flow capacity, a quicker response rate, and tighter limit bands that allow engine builders to precisely tune the power enrichment phase of their calibration. All Quick Fuel FOUR DOOR power valves are hand-tested and set to the stamped value. Their thicker molded diaphragm adds increased protection against backfire-induced rupture.
( 51 )
$13.97
$12.57
On Sale
Go Fast Bits Respons TMS direct-fit blow-off valves with TMS Advantage allows you to infinitely vary how much air is recirculated or vented to atmosphere. Simply by twisting the adjustment ring, you can change the sound of your BOV from silent to ear-shattering! GFB's patented venting bias adjustment system can be tweaked between full recirculation (silent) and full atmosphere (loud). With the Turbo Management System (TMS) technology, Respons BOVs can return the engine to peak boost up to 30 percent faster than a factory diverter valve when shifting gears, offers better throttle response, and unlimited boost-holding. If cars like yours typically suffer issues such as backfiring and stalling when using a fixed-ratio atmosphere-venting BOV, the Respons valves can help. By adjusting the venting bias to suit the car you can achieve a blow-off sound without having to put up with the issues.
( 1 )
$307.80
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$585.00
$277.02
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$526.50
On Sale
Go Fast Bits VTAs are a performance blow-off valve solution for a wide range of foreign and domestic cars and trucks with an electronic factory diverter valve. If you want sound with your performance (or performance with your sound!), these VTAs offer just that! By combining the proven performance benefits of GFB's ground-breaking DV+ with atmosphere venting, the VTA delivers an aggressive blow-off sound, improved throttle response and boost recovery, as well as superior boost holding and reliability in extreme conditions. The VTA shares the successful DV+ design philosophy: "Keep what works, replace what doesn't." This means Go Fast Bits retained ECU control and the solenoid from the factory diverter to ensure the fastest possible response time—without the added and unnecessary cost of replacing the solenoid like some brands do. The weak part of the factory diverter has always been the plastic valve mechanism; this is the part GFB has replaced. The VTA features CNC-machined billet components that last a lifetime, and the valve operation method has been updated for better performance. The factory diverter valve can only operate in two states: open or closed. When it opens fully at low boost or during a partial throttle lift mid-corner, it causes increased lag and a noticeably non-linear boost transition. GFB pioneered the use of "pilot operation" in the DV+, which works by re-purposing the factory solenoid to control the pressure behind the piston rather than the piston itself. This allows the solenoid stroke to be much shorter, speeding up the response time and increasing the actuation force. More importantly, it allows the piston to open and close progressively in response to the amount of boost pressure present, which smooths boost transitions and reduces the lag caused by the factory diverter valve. It's this design philosophy that makes the VTA not only the best performing blow-off valve solution, but also the best value on the market. Order the VTA Performance blow-off valve model recommended for your vehicle. Key features: * TMS Technology for faster boost recovery on gear shift and during throttle modulation * Improved boost holding ability * Atmosphere venting for blow-off sound * Retains ECU control * Simple, direct bolt-on kits include everything you need to install
( 5 )
$198.00
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$269.10
$178.20
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$242.19
On Sale
The Hybrid valve is back! Go Fast Bits Hybrid dual outlet valves are three valves in one; full recirculation, full atmosphere, or 50/50 venting. In 1999, GFB's first Hybrid valve pioneered the dual port design, which was so successful, and the technology has since been adopted by most other brands. By "staging" the two venting outlets at low valve lifts most of the air is recirculated. As the car is driven harder, the valve opens further and more of the atmosphere venting port is exposed for a louder sound--a benefit that makes it possible to use these valves on cars with sensitive airflow meters that often suffer issues such as backfiring and/or stalling, whilst still achieving the signature blow-off sound. Go Fast Bits Hybrid dual outlet valves are direct-fit, bolt-ons with a range that covers a huge list of popular vehicles. Purchase the Hybrid model for your vehicle.
( 2 )
$225.00
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$436.50
$202.50
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$392.85
On Sale
FUELAB is an industry leader in fuel system technology and innovation. They offer a wide range of parts and accessories, including these rollover protection fuel tank vent valves. Designed for your safety in the event of an accident, the shut-off valve fittings are machined from billet aluminum with a black anodized finish. Order the size needed for your application.
Not Yet Reviewed
$65.00
$58.50
On Sale
Go Fast Bits Respons TMS Universal blow-off valves with TMS Advantage are patented adjustable venting bias system diverter valves. GFB's Respons BOVs allow you to precisely control how much air expels from each of the two outlets, which is key for two reasons. First, you can adjust how loud the blow-off sound is--recirculate all of the air for silent factory operation, vent it all to atmosphere for maximum noise, or set it anywhere in between to suit your preference. Second, you get a blow-off sound without causing stalling, backfiring, or any other BOV-related issues, even on a car with a sensitive airflow meter (MAF). And this is accomplished by simply twisting the adjusting ring. GFB's Respons TMS Universal blow-off valves are not just noisemakers. They also offer better throttle response, faster boost recovery on gearshift, and unlimited boost-holding. Using GFB's TMS (Turbo Management System) principle, tests show that Respons valves can return the engine to peak boost up to 30 percent faster than a factory diverter valve when shifting gears.
Not Yet Reviewed
$307.80
$277.02
On Sale
XDR blow-off valve kits integrate external blow-off valves allowing you to vent excess boost pressure into the atmosphere. Thus, eliminating compressor surge and strain on turbochargers and creating that popular turbo swoosh sound. You can even use the adjustable knob on top to either extend the swoosh sound, or make it a quick, short burst of air. Boost your performance and thrill the crowd with XDR blow-off valve kits. Features, parts, and specs may include: * Serviceable Delta Force synthetic filter (stops mud, dirt, and debris from entering exhaust port) * CNC-machined aluminum construction * All necessary hardware * Detailed instructions for easy at-home installation * Easy disassembly for cleaning and maintenance * Lifetime limited warranty
( 3 )
$155.95
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$209.95
$85.95
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$115.95
On Sale
Go Fast Bits SV52 blow-off valves are more compact and offer more flow. Standing only 86mm tall including the weld-on adapter, the SV52s have an astonishing boost pressure rating of 300 psi, and feature a monobloc body design, CNC-machined from a single aluminum billet that ensures strength without adding unnecessary bulk. They are designed with an anodized piston bore that creates an extremely hard and low-friction surface on which the single-piece aluminum 52.5mm piston glides and will continue to do so over countless cycles. The piston also provides strength and reliability, something a diaphragm cannot match in a high-boost BOV environment. Go Fast Bits SV52 blow-off valves include two springs, plus a spring pre-load adjustment system, so you can dial it in for optimum throttle response and boost recovery after gearshift, without resorting to the costly hit-and-miss approach of purchasing extra springs.
Not Yet Reviewed
$283.50
$255.15
On Sale
Okay, yes, there are times you wish you could have that signature turbo blow-off sound, but not all the time. Go Fast Bits Deceptor Pro II TMS direct-fit motorized blow-off valves deliver just what you need—the ability to control how loud your BOV sound is, from the driver's seat. Featuring GFB's patented Venting Bias Adjustment System, coupled with remote electronic control, Deceptor Pro II units allow you to infinitely vary how much air is recirculated, and how much is vented to atmosphere. So, if your car typically suffers issues, such as backfiring and stalling when venting more than a certain percentage of air to atmosphere, the controller can easily be configured to limit the maximum venting ratio. This way, you can achieve a blow-off sound without having to put up with the issues. GFB Deceptor Pro II features and benefits: * Adjust your BOV venting bias electronically on-the-fly * Revised porting to optimize flow and venting bias * Compact design fits in most factory valve locations * Bore finishing process ensures a lifetime of reliable operation * Direct bolt-on for most vehicles available * Remote proportional venting bias/volume control- from silent to loud or anywhere in between * Sleek, compact in-car BOV volume controller with backlit dial * End-point adjustment to control maximum vent to atmosphere bias setting * Volume adjustment mechanism driven by a high-torque geared electric motor * Durable, low-friction gear train supported by precision sealed ball-bearing * Supplied with all parts and wiring required to have it up and running quickly and easily
Not Yet Reviewed
$453.60
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$805.50
$408.24
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$724.95
On Sale
Go Fast Bits SXV blow-off valves are designed to ensure the ultimate reliability, performance, and boost holding. Featuring a 25mm inlet and outlet, the SXV is the perfect valve to replace the plastic OEM bypass/diverter valve or integrate into a turbo system that didn't previously have a valve. Plastic hose-mounted OEM bypass valves are very common, as are the reliability issues they suffer from cracked plastic and diaphragm failures that result in significant boost loss and poor performance. A significantly leaking OEM valve can also accelerate wear or even damage the turbo from over speeding. These SXV blow-off valves utilizes an uncompromising approach to their design and materials to ensure all your hard-earned boost gets to the engine, so the turbo doesn't work harder than it needs to. Deliver your turbos' full potential with the use of these SXV blow-off valves featured from Go Fast Bits! Product Overview: * Precision CNC-machined components for rugged reliability * Viton piston seal for the ultimate boost holding * The operation of the SXV is designed to offer the best possible throttle * An OEM bypass/diverter valve is open until it needs to close—increases turbo lag * An SXV is closed until it needs to open—minimizes turbo lag * By venting only, when necessary, the SXV eliminates the additional lag imposed by the OEM valve, resulting in the best throttle response your turbo system is capable of delivering. * Switch out your OEM valve for an SXV for the ultimate reliability and throttle response, with the peace of mind of Go Fast Bits lifetime warranty!
Not Yet Reviewed
$171.00
$153.90
On Sale
Go Fast Bits Deceptor Pro II With Mach 2 Motorized Blow-Off Valve Combos deliver all the performance—with or without the noise! Give your Kia Stinger the sound you want and the performance to go with it. This is a combination kit for the Stinger that mixes the valve types. Since both valves are fed from a common chamber, and there is no MAF sensor, it's no problem to mix and match valve types and venting bias. The combo includes one Deceptor Pro II AND one Mach 2, which still allows you to adjust the venting sound, but at a more affordable price than the twin Deceptor Pro kit. You can adjust the volume of your sound system from the driver's seat, as well as your Stinger's exhaust sound—so why not the BOV sound too? The Deceptor Pro II features the same patented Venting Bias Adjustment System as the Respons TMS, but adds electronic in-cabin adjustment so you can change how loud the BOV venting sound is from the driver's seat! To top it off, if your car typically suffers issues such as backfiring and stalling when venting more than a certain percentage of air to atmosphere, the controller can easily be configured to limit the maximum venting ratio.
Not Yet Reviewed
$625.50
$562.95
On Sale
Go Fast Bits Deceptor Pro II TMS Universal Motorized Blow-Off Valves enable you to control the sound of the BOV from inside the cabin! So how much more can you do with a blow-off valve? Well, the Deceptor Pro II takes the 'Respons' concept even further: * Adjust your BOV venting bias electronically on-the-fly * Revised porting to optimize flow and venting bias * Compact design fits in most factory valve locations * Direct bolt on for many vehicles * New bore finishing process ensures a lifetime of reliable operation Additional features: * Remote proportional venting bias/volume control—from silent to loud or anywhere in between * Sleek, compact in-car BOV volume controller with backlit dial * End point adjustment to control maximum vent to atmosphere bias setting * Volume adjustment mechanism driven by a high-torque geared electric motor * Durable, low-friction gear train supported by precision sealed ball-bearing * Supplied with all parts and wiring required to have it up and running quickly and easily * Models available in a variety of inlet/outlet sizes for applications such as Kia, Toyota, VW, Audi, Saab, Subaru, Misubishi, and Nissan
Not Yet Reviewed
$453.60
$408.24
On Sale
FUELAB fuel cell vent kits give your fuel cell the proper ventilation that it needs. These kits include everything you need to connect to FUELAB Quick Service Surge Tank (QSST) rollover valve and all the way to your vent filter. Kits include: * 10 AN push-lock fitting * 5/8 fuel vapor hose * 5/8 barb connector * Vent filter (yellow) * Hose clamps
Not Yet Reviewed
$60.00
$54.00
On Sale
Maintain proper fuel flow using one of these FUELAB replacement fuel filter elements. They are available in different materials and micron filtering ratings so you can choose what's best for your fuel system.
( 9 )
$10.00
$9.00
On Sale
Go Fast Bits Respons TMS/Mach 2 BOV with TMS advantage combos allow you to adjust the venting sound, but at a more affordable price than the twin Respons kit. The Respons TMS valve features GFB's patented venting bias adjustment system that allows you to infinitely vary how much air is recirculated or vented to atmosphere. Simply by twisting the adjustment ring, you can change the sound of your BOV from silent to ear-shattering. Using GFB's TMS technology, the Mach 2 ensures up to 30 percent faster boost recovery on gearshift and optimum throttle response, as well as the ability to withstand boost pressures of 100 psi and more. Put simply, it can hold more boost than any turbo could produce.
Not Yet Reviewed
$468.00
$421.20
On Sale
Racers sometimes prefer to race their cars without using a power valve. In these cases, the only way to properly block off the power valve circuit is with one of these Holley power valve plugs and gaskets. They'll fit any Holley carburetor with 1/2 in. x 28 threads, and block the circuit for all-out race performance!
( 6 )
$10.13
$9.12
On Sale
Power valve blowout protection can be added to carb models 2300, 4150, and 4160 with these Holley power valve check ball kits. These kits include a spring, a brass seat and check ball, a drill bit, and a stop. They will effectively protect the power valve, and are easy to install.
( 26 )
$31.79
$28.61
On Sale
The ability to change the sound of a blow-off valve is increasingly becoming an important issue with buyers—who want to sound different from everyone else. Go Fast Bits offers replacement whistling trumpets that deliver a different sound! In 2004, the whistling trumpet was first released, emitting a piercing screech when driving aggressively. These new models can be used in place of the standard trumpet on GFB valves—and will make a unique whistling sound. However, it is necessary to run the valve so that all (or most) of the air vents through the trumpet. Order the model recommended for use with your valve application.
Not Yet Reviewed
$38.48
$34.63
On Sale
Go Fast Bits offers a variety of blow-off valve components—including these Deceptor Pro Servo Motors. The turbocharger boost pressure servo motor replacements are built to perform just like the originals.
Not Yet Reviewed
$70.74
$63.67
On Sale
Go Fast Bits Mach 2 upgrade kits convert blow-off valves from recirculating to atmosphere venting. To vent the Mach 2 to atmosphere, you need to ensure the piston stays closed at idle and the recirc hose is plugged. The 5930 Atmosphere Conversion Kit includes a 30mm hose plug to block off the recirc hose, a trumpet to replace the hose outlet on the Mach 2 (not necessary for functionality, but makes the sound louder!), and a firmer spring. The Mach 2 is supplied with a softer spring that's suitable for recirculation venting or cars with idle vacuum of 18inHg or less. If the piston stays closed with the existing spring in the Mach 2, there is no need to swap it out. However, if the piston hovers open at idle even with the spring pre-load maxed, the firmer spring in this kit should be installed to prevent stalling or backfiring.
Not Yet Reviewed
$37.80
$34.02
On Sale
Go Fast Bits offers a variety of blow-off valve components—including these Deceptor Pro controllers. These turbocharger boost pressure control boxes (without looms or servo motor) are key parts to your BOV/diverter setup.
Not Yet Reviewed
$76.50
$68.85
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