Fuel-It! Stage 3 LPFP Upgrade - BMW F-Chassis B58 (240i/340i/440i)
Do Not Upgrade the Pump / Do Not Add a Hobb's Switch / Do Not Add a Lockring Removal Tool
$829.95
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Fuel-It
Fuel-It! Stage 3 LPFP Upgrade - BMW F-Chassis B58 (240i/340i/440i)
$829.95
OVERVIEW
The Fuel-It! Stage 3 LPFP Upgrade adds a high-flow Walbro secondary in-tank pump to the F-chassis B58 fuel system for big-power E85 setups. It combines a new stock-style low-pressure pump with a Walbro 450 secondary (F90000274) — supporting around 700 whp — with an optional Walbro 525 for even more.
SPECS
- New stock-style LPFP plus a Walbro 450 (F90000274) secondary pump; ~700 whp support
- Optional Walbro 525 secondary for higher output
- Includes filter, brackets, fittings, and wiring
- Requires lockring removal to install (not a pure drop-in)
- Secondary pump is boost-triggered — a 15 psi Hobbs switch (or a controller) is recommended
- For off-road / competition fueling on high-ethanol blends
PARTS INCLUDED
- New stock-style low-pressure fuel pump
- Walbro secondary pump (450 or 525 per selection)
- Filter, mounting brackets, fittings, and wiring
TECH RESOURCES
- Run E85 with our Fuel-It! F-Chassis Flex Fuel Kit
- Requires a supporting tune — MHD Super License (BMW B58)
- Secondary pump is boost-activated — use a 15 psi Hobbs switch or a controller
VEHICLE APPLICATIONS
| Make | Model | Chassis | Engine | Years |
|---|---|---|---|---|
| BMW | M240i | F22/F23 | B58 Gen 1 3.0L | 2016–2019 |
| BMW | 340i | F30/F31/F34 | B58 Gen 1 3.0L | 2016–2019 |
| BMW | 440i | F32/F33/F36 | B58 Gen 1 3.0L | 2017–2019 |