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Fuel
How to Wire a Secondary Fuel Pump: Relay, Trigger, and Controller Setup for Dual-Pump BMW Builds
The second Walbro 450 in our dual pump LPFP kits pulls about 19 amps at 80 psi, so our activation harness gives it its own fused relay circuit. Our support guide to...
Fuel
BMW Low Fuel Pressure Codes Explained: 29F2, 29DC, and When Your LPFP Is Dying
What BMW codes 29F2, 29DC, 2FBF and 2AAF mean, the 5 bar low side log that tells a dying LPFP from an HPFP on the N54, N55 and B58, and which pump...
Fuel
B58 Stage 3 LPFP: 1000 WHP From a Single Pump
Our F chassis B58 Stage 3 brushless LPFP runs one pump on the factory control and is rated for 850+ whp on E85. What it fixes, what it cannot (the Gen 1...
Fuel
Walbro 450 vs 535 vs DW400: Which Fuel Pump Do You Need?
Walbro 450 vs 535 vs DW400 compared on flow at 40 to 100 psi, amp draw, E85, check valves and US dollar prices, with what N54 and Mustang owners report.