SKU: 37645800304

Dual Piston Blow Off/Dump Valve

Sale price$97.19 Regular price$107.99
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Ships within 48 hours · Estimated delivery Aug 16 - Aug 21

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Description

Dual Piston Blow Off/Dump ValveSuitable for most turbo cars with an Air Flow Meter. Made from billet aluminium, this atmospheric diverter valve dumps the charge air to atmosphere creating the "Whoosh" sound when the throttle is lifted. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably. Unlike single piston or diaphragm diverter valves, this uses counter balanced springs and dual pistons to prevent the valve from leaking

Suitable for most turbo cars with an Air Flow Meter. 

Made from billet aluminium, this atmospheric diverter valve dumps the charge-air to atmosphere creating the "Whoosh" sound when the throttle is lifted. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably. Unlike single piston or diaphragm diverter valves, this uses counter balanced springs and dual pistons to prevent the valve from leaking air into the intake system at idle. This prevents our diverter valves suffering any of the failures associated with single piston and diaphragm type diverter valves.

All Forge Motorsport Dual-Piston Atmospheric Valves have been designed and built with the intent of venting 100% of the residual charge air remaining in your forced induction system to the atmosphere at throttle lift. While we have incorporated many elements into the design of the Dual-Piston valves to aid in their compatibility with mass air-flow sensor equipped vehicles, we cannot always guarantee that each individual’s application will be compatible with a valve that vents the charge air into the atmosphere.

Forge Motorsport nor any of it’s Authorised Distributors can assume any responsibility for any adverse effects resulting from the installation of this valve onto a vehicle whose engine-management-system, whether factory or aftermarket, is not capable of compensating for the loss of metered air through a vent-to-atmosphere valve such as this.

 

In The Box:
1 x FMDV004 Valve
1 x Forge Sticker

If you wish to tune this product to fit the needs of your engine, please see the spring tuning kits below.

The valve has a port size of 25mm

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes sooner

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 37645800304

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Bozeman, US
★★★★★ 4
Comfortable
Size: 9-10 Women/7.5-8.5 Men, Color: Slide Navy-ultrasoft-version
I hope they convert this sandal into shoes. I would definitely buy them. It is so comfortable.
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Reviewed in the United States on April 27, 2026
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LoveDogs
West Palm Beach, US
★★★★★ 5
I love the metallic iridescent!
Why did you pick this product vs others?: I love the color and the feel but the sizing is wonky. I’m a perfect 7.5. The 7 wears like a 6-6.5 and the 8 is just a little too big. I’m keeping my 7 in the blue and I have a pair in wine/purple in 8 from a few years ago. I just won’t be running a mile in them anytime soon! LOL I love the look!
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Reviewed in the United States on June 30, 2025
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Renee Wilson
Chelsea, US
★★★★★ 5
Soft and comfortable
Great to slip on after being outside
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Reviewed in the United States on May 3, 2026
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J.C.
Chelsea, US
★★★★★ 3
Comfortable and good traction
After being impressed by a similar (but not identical) pair of cheap slippers at an AirBnB rental, I searched out these. I bought the 44-45 size for my size 10.5 (US) feet; according to the size chart, that's supposed to fit sizes 10.5 to 11. I find that they're quite large, so that they're loose on my bare feet. In crew socks, they're OK and I use them as house slippers. As advertised, they're soft, flexible, and springy. They grip the floor quite well. They're way better than the Crocs thong-style sandals I was using as bathroom sandals before. All in all, good value for money, but if you're using them as bathroom slippers and you have normal width feet, round the size down if you're at the small end of the stated range.
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Reviewed in the United States on October 22, 2024
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Ada C.
Lexington, US
★★★★★ 5
EQUICK Cloud Slides Pillow Slippers for Women
Very comfortable and lightweight. No stiffness at all.
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Reviewed in the United States on April 25, 2026

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