Give your BMW N54 or N55 the fuelling headroom it deserves with the Fuel-It! 650HP Low Pressure Fuel Pump Upgrade Kit from Nforcd. Designed for E-chassis models targeting up to 650 whp, this in-tank LPFP solution retains the factory pump for everyday use and adds a secondary pump that activates under boost to support increased flow while maintaining OEM-like drivability.
- Supports builds up to 650 whp on BMW N54 and N55 E-chassis platforms
- Secondary in-tank pump runs in parallel with the stock unit to add up to 200% more low-pressure fuel capacity
- No modification to the factory bucket, wiring or fuel lines and fully reversible
- Reduces strain on the OEM wiring and EKP and is designed to help avoid iDrive fuel pressure warnings
- Choose your pump: Walbro 450 F90000274 or optional Walbro 525 F90000285
- Available with or without a new stock LPFP, plus optional new tophat and optional secondary pump wiring harness
How it works: the kit utilises your factory LPFP assembly for normal driving. Under boost, the added Fuel-It! secondary pump switches on to deliver the extra flow your tuned engine demands. Because the system runs the secondary pump independently, there is no added load on the OEM controller.
If you already run a Fuel-It! Stage 2 setup, this kit can be added to upgrade your system further.
Control and setup
The secondary pump must only operate under boost, not continuously. We recommend triggering it with a Hobbs switch (15 psi is common, or 4 psi if you generate strong torque at lower boost). Some newer BMS port injection controllers can also provide the trigger signal.
What’s included
- Walbro 450 pump F90000274 (optional upgrade to Walbro 525 F90000285)
- Black anodised custom fitting and pump brackets
- Fuel line and replacement clip
- 9/64 inch terminals with associated hardware
- Secondary pump wiring harness (optional)
- New tophat (optional)
- New stock pump assembly (optional)
Fitting notes: installing the upgrade requires adding two 9/64 inch power terminals to the tophat. If you would prefer not to modify your original tophat, select an option that includes a new tophat or a complete stock LPFP assembly. A lock ring removal tool is recommended for easier access.
Vehicle compatibility
- BMW 1 Series E88 convertible 11/2006 to 10/2013
- BMW 1 Series E82 coupe 11/2006 to 10/2013
- BMW 3 Series E90 saloon 02/2004 to 09/2008
- BMW 3 Series E90 LCI saloon 07/2007 to 12/2011
- BMW 3 Series E91 touring 02/2004 to 08/2008
- BMW 3 Series E91 LCI touring 07/2007 to 05/2012
- BMW 3 Series E92 coupe 05/2005 to 02/2010
- BMW 3 Series E92 LCI coupe 11/2008 to 06/2013
- BMW 3 Series E93 convertible 09/2005 to 02/2010
- BMW 3 Series E93 LCI convertible 11/2008 to 10/2013
- BMW X1 E84 04/2009 to 06/2015
Trusted by enthusiasts and a popular choice with Nforcd customers, this Fuel-It! upgrade delivers a cost-effective way to support higher boost while preserving OEM manners. Order your kit today. Professional fitting is available at Nforcd in Warwickshire; request a quote at Sales@nforcd.com.

