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Forge BMW N54 Chargepipe with BOV (1M, 135i & 335i) - ML Performance UK

Forge BMW N54 Chargepipe with BOV (1M, 135i & 335i)


  • £334.99
    exc. VAT £279.16
  • 2 reviews

Compatibility Check - Enter your full VIN. We will double check compatibility for you before dispatching!


Suitable for the BMW E82 E88 135i & E90 E91 E92 E93 335i fitted with the N54 Twin Turbo engine. This alloy hard pipe fits to the throttle body and incorporates our high flow blow off valve. This valve, fresh from our R&D department, is the largest displacement valve that Forge have ever made! Featuring a 50mm (2”) aluminium piston so that there are no issues with split diaphragms, we have not found the power handling limits of this valve yet!

The piston uses heat stabilised Viton o-rings and high-temperature grease to ensure a long life with minimal wear and very long service intervals.

Note: that due to the high flow (and low restriction) offered by the 50mm valve, they are very quiet in operation.


We recommend the option Blue Spring + 6.3mm Shim (-10 PSI) for most N54 application, unless you have measured your vacuum pressure reading and are producing much more or much less than than 10psi, this should be taken at normal operating temperature whilst the engine is idling with a pressure gauge for accuracy. 

You can also add the optional 10mm Shim with your order, with this additional Forge 10mm Shim, you can switch between 10psi and 11psi depending on your requirement. 


Please Note: In order to determine the correct spring needed, you will need to measure the inlet manifold pressure.


You may wish to consider the replacement OEM C-clip and O-ring if your stock one is missing, damaged or perished.


In The Box:

1 x FMBM335DV1 Valve
1 x Alloy Throttle Body Hard Pipe 
1 x Silicone Reducer
2 x Silicone Straight Blanks Hoses (25mm)
2 x 30mm Hose Clamps
1 x 80mm Hose Clamp
1 x 90mm Hose Clamp
2x M6 x 12 Socket Cap Bolts
1 x M6 x 16 Socket Cap Bolts
1 x M6 Penny Washer
2 x M6 Plain Washer
1 x USB Instructions
1 x Forge Keyring, Bottle Opener and Sticker


Compatibility Check

To ensure the part(s) you have ordered fits your vehicle, we run a compatibility check prior to dispatch. We can do this either using your registration number(UK) or the last 7 digits of your VIN. Simply enter your car details prior to checkout.



1 Series E82 Coupe 135i / 1M (N54) from 2008 - 2010

1 Series E88 Convertible135i (N54) from 2008 - 2010

3 Series E90 Saloon 335i (N54) from 2007 - 2010

3 Series E91 Estate 335i (N54) from 2007 - 2010

3 Series E92 Coupe 335i (N54) from 2007 - 2010

3 Series E93 Convertible 335i (N54) from 2007 - 2010



Forge Limited Lifetime Warranty (Non-Transferable)


Manufactured by



Part Number




45.5cm x 41cm x 25.5cm




Next Day UK Delivery

Get FREE Guaranteed next day UK delivery for orders over £100 (exc. VAT) on all in stock items. Same day dispatch available if your order is placed before 11:00 GMT on all in stock items!

Worldwide Shipping

We ship worldwide via DHL International, simply enter your full address at checkout to see the shipping option(s) and quote(s). Same day dispatch available if your order is placed before 11:00 GMT on all in stock items!

Customer Reviews
5.0 Based on 2 Reviews
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United Kingdom United Kingdom
This should be the first modification to any N54!

My OEM chargepipe had at the time cracked right on the throttle body (a common issue with these) I read the forums and reviews on this and sent it. We are now 8 months in 0 issues and looks and sounds the part, for anyone who has just got an N54 this should be at the top of your list to replace!

andrew p.
United Kingdom United Kingdom
Blow off valve

Ordered alot of items off ML now and every time its very fast delivery and always in perfect condition. Forge bov is a very suttle quiet sound but does the job perfectly for the people wanting to be discreet. If your wanting a louder blow off sound the hks is a better option. I own both and if going to a car show the hks goes on, if daily driving the forge goes on.