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Fuel-It BMW E82 E90 E84 Dual Walbro Stage 4 Low Pressure Fuel Pump And Fuel Line Upgrade (Inc. 1M, 135i & 335i)

Regular price £1,449.95 GBP
Regular price £0.00 GBP Sale price £1,449.95 GBP
Jubilee Sale Sold out
exc. VAT £1,208.29 GBP
Price match

If you are making over 600whp and your LPFP pressures are dropping, this is the solution for you!

This is the most powerful LPFP upgrade available and it still utilizes the stock bucket and retains all the factory venturi's and fuel transfer systems in the tank while bypassing all the factory restrictions to maintain higher pressures and greater flows.

***Note: This system requires you to run port injection and an external fuel pressure regulator upgrade***

This upgrade includes two Walbro E85 pumps, a custom 6 micron ethanol compatible filter assembly, and all the -6an fuel lines and fittings to complete your upgrade.  This solution provides up to 300% more flow than stock and is boost referenced.


  • A complete plug and play solution by simply replacing your stock bucket.  However, to utilize the secondary, an additional wiring harness must be installed.
  • Two new Walbro filters
  • A custom fitting that is tuned to optimize the venturi and pump output
  • Spare vent tube clip
  • Wiring harness for the secondary pump
  • All the necessary -6an fuel lines to connect the pumps, fuel filter, HPFP, and port injection rail
  • 6 micron E85 compatible fuel filter
  • Flow testing prior to shipping
  • Two new E85 compatible Walbro 450 pumps (F90000274)
    • Optional upgrade to Walbro 525 pumps (F90000285)


Additional Requirements

When you are ready to utilize the secondary on this assembly the following must be installed as well

  • Return kit
  • Port injection kit


Recommended Accessories



An ethanol analyzer must be used in conjunction with the ethanol sensor to read your ethanol content.
There are three options to read your ethanol content when using our ethanol analyzers:

  • Bluetooth only
  • Bluetooth and JB4 integrated (0-5 Volt) 
  • Bluetooth and 50-150hz Raw Signal
    • Bluetooth (Iphone or Android app must be purchased to use this feature)


All BMW E chassis with the N54 & N55 turbocharged engines, 1M, 135i and 335i

  • 1' E88         (11/2006 — 10/2013)
  • 1' E82         (11/2006 — 10/2013)
  • 3' E90         (02/2004 — 09/2008)
  • 3' E90 LCI   (07/2007 — 12/2011)
  • 3' E91         (02/2004 — 08/2008)
  • 3' E91 LCI   (07/2007 — 05/2012)
  • 3' E92         (05/2005 — 02/2010)
  • 3' E92 LCI   (11/2008 — 06/2013)
  • 3' E93        (09/2005 — 02/2010)
  • 3' E93 LCI   (11/2008 — 10/2013)
  • X1 E84       (04/2009 — 06/2015)

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. 


Fuel-It BMW E82 E90 E84 Dual Walbro Stage 4 Low Pressure Fuel Pump And Fuel Line Upgrade (Inc. 1M, 135i & 335i) - ML Performance




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Fuel-It Limited Warranty.


BMW 135i and 335i Stage 2 LPFP installation

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