Spool Stage 3 DIY LPFP | BMW B58 (G20, G22, G30, G32, G11, G12)
The Spool Performance Stage 3 DIY LPFP is a low-pressure fuel pump (LPFP) upgrade kit for BMW B58 engines. This solution is designed for enthusiasts who want a cost-effective DIY solution to eliminate fuel delivery problems at high power levels.
Product Description
The Stage 3 DIY kit offers similar flow capacity to ready-made plug & play solutions, but at a significantly lower price. The package allows for the addition of a secondary, boost-activated fuel pump to the system.
- Matches the flow capacity of a plug & play solution
- Significantly more affordable DIY option
- Eliminates low-pressure side bottlenecks
- Designed for high-power setups
Operating Principle
- Auxiliary pump activates based on boost pressure
- Provides additional fuel as load increases
- Ensures adequate supply to the HPFP system
Why is an upgrade necessary?
The B58 engine's standard LPFP can become a limitation:
- High power demands more fuel
- Ethanol blends increase fuel requirements
- HPFP does not function optimally without sufficient supply
Stage 3 LPFP:
- Significantly improves fuel system capacity
- Enables high power safely
- Reduces fuel side limitations
Installation
- DIY solution (self-assembly)
- Clear instructions included
- Not entirely plug & play
Package contents
- DW300 fuel pump (modified with quick connector)
- Billet aluminum pump bracket
- Nylon corrugated hoses (pump and filter side)
- Clamps (crimp + screw clamps)
- Activation wiring harness
- Boost pressure controlled switch
- Boost pressure reference adapter
- Installation hardware kit
Compatibility
BMW models equipped with the B58 engine, incl.:
- G20 / G21 3-series
- G30 / G31 5-series
- G32 6-series GT
- G14 / G15 / G16 8-series
- G11 / G12 7-series
(Model years mostly around 2014–2019, check compatibility before installation)