SKU: 47802232888

Blow Off Valve for Renault Megane RS 280 & 300 Mk4

Sale price$100.31 Regular price$111.45
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Ships within 48 hours · Estimated delivery Aug 30 - Sep 4

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Description

Blow Off Valve for Renault Megane RS 280 & 300 Mk4We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes sooner This Blow Off, or dump valve, is for the Renault and Nissan Turbo engines that have the electronically controlled bypass valve (OEM Part no. 144839204R). It is recommended for any vehicle where the boost pressure has been increased by an ECU software upgrade and for unmodified vehicles operating in warmer climates, as a solution to the many failures that have

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

This Blow Off, or dump valve, is for the Renault and Nissan Turbo engines that have the electronically controlled bypass valve (OEM Part no. 144839204R). It is recommended for any vehicle where the boost pressure has been increased by an ECU software upgrade and for unmodified vehicles operating in warmer climates, as a solution to the many failures that have occurred. Unfortunately, the failure doesn’t always result in a check engine light as the valve can still be blown open by the boost pressure, so you may not be aware that you are losing power due to this. This prevents the diaphragm from sealing.

Our alternative is a fully engineered solution offering both significantly improved reliability. The Forge valve is piston based, there is no diaphragm to fail, and of all aluminium billet construction, it replaces the original unit with a pressure/vacuum operated piston valve that still also retains the desirable OEM ECU control, over valve actuation.

In The Box:
1 x FMDV23A Valve
1 x 2000mm of 4mm Vacuum Tube
1 x 50mm of 10mm Vacuum Tube
1 x 3 port Solenoid and fixings
13 x Cable Ties
1 x Uprated Red Spring
1 x 10-6-10 T Piece
1 x Forge USB Instructions
1 x Forge Keyring and Sticker

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

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • 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: 47802232888

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4.7 ★★★★★
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Susan K Anderson
San Leandro, US
★★★★★ 5
Men’s mock golf shirt
Color: Lake Green, White, Black, Size: XX-Large
Fit & quality very good.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2026
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Garfield S
Houston, US
★★★★★ 5
Nice Fit
Color: Black, White, Light Gray, Size: 3X-Large
I picked this up looking for something simple but clean, and it delivered. The fit is comfortable, the material feels solid, and it looks good without needing much effort. It’s one of those pieces you can throw on and still look put together.
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Reviewed in the United States on March 29, 2026
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Rob75432
Houston, US
★★★★★ 4
Good value, soft and comfortable
Color: Black, Army Green, Light Gray, Size: 4X-Large, Color: Black, Army Green, Light Gray, Size: 4X-Large
Initial thoughts are very positive with this 3 pack shirt set. The green is similar to an OD military green and the black and gray are standard color shades. Material is soft and sizes are true to size. The mock turtleneck isn’t too tight but may still be a little annoying to some people. I do question the amount of spandex in these shirts. Tag says 5% but these shirts are extremely stretchy and feels like a higher spandex content. It’s also a little tough to figure out which way is the front of the shirt. Visually rhe front does have a lower collar line than the back but would still be nice to have a brand tag printed in the back of the shirt for quicker identification. Overall for roughly $12 a shirt these are a good choice for everyday wear. I will update rating if these shirts fail to meet expectations after further use.
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Reviewed in the United States on April 8, 2025
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Eliot
Battle Creek, US
★★★★★ 5
👍🏻
Color: Black, Army Green, Light Gray, Size: 5X-Large
Weirdly thick material, I wasn’t a fan but it’s a good sleep shirt
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Reviewed in the United States on May 28, 2026
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Dr. DeeJaye
Charlottesville, US
★★★★★ 5
Just what I wanted.
Color: Black, Navy Blue, Wine Red, Size: 5X-Large
These may have just become my standard shirt to wear. Feels good whether tucked or out. Drapes well and fits well. So far, I can see it adjust to the different undershirt I may wear. Will probably order another set in other colors and a back up set of the basics because they will get worn a lot.
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Reviewed in the United States on July 17, 2025

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