Forge Blow Off Valve N18

Forge Blow Off Valve N18

(2 reviews) Write a Review
2.00 LBS
Calculated at Checkout

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

The Forge blow off valve is designed specifically for the Mini/Peugeot N18 engines including the Mini Cooper S 2011-onwards, Mini JCW Cooper S 2013-onwards, Mini R58 Coupe 2012-onwards, Peugeot 208 GTi late 2012-onwards, Peugeot 308 GTI, RCZ THP 156 & 200, 2011-onwards. This product is either recommended where the boost pressure has been increased by an ECU software upgrade, for those wanting a loud blow off sound, or simply as a solution to the many failures that have occurred.

The most common complaint on the OEM solenoid valve is a split diaphragm preventing the valve from opening fully, or not at all. This doesn't always result in a check engine light, as the valve can still be blown open by the boost pressure. We have seen many valves with this problem. The other problem is that diaphragm retaining ring is made from very thin plastic that goes brittle with heat cycles, and eventually fails. This prevents the diaphragm from sealing with the same problems as mentioned above. This particular failure also results in the valve falling apart upon removal from the turbo, though in extreme cases bits of plastic can enter the turbo and destroy it.

Our alternative is a fully engineered solution offering significantly improved reliability. Our valve is piston based, with no diaphragm to fail, and of all aluminum 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. The spring is interchangeable for different levels of boost, and the solenoid is plug and play with the wiring harness which is included.

Note: Fits 11-14 N18 Engine Turbo Cars

2 Reviews

  • 5

    Posted by Matt M on 20th Jan 2021

    Instructions are pretty easy to follow, I got it mounted in about 30 minutes. Position of the vacuum lines for the valve body is close to the oil filter housing, but it's not hard to tuck them away.

    Sound and response on the valve is very nice and crisp, highly recommended!

  • 5
    Solid Product

    Posted by Geno on 25th Sep 2020

    Would recommend getting it installed professionally. Took me around 4 hours of grueling pain in a tiny engine bay to get it in. The product itself, however, is well designed and feels quality. Sounds great too!