Fuel-It! High Pressure Fuel Pump (HPFP) Upgrade - BMW Gen1 B58

OVERVIEW

The Fuel-It! HPFP Upgrade increases direct-injection fuel supply on the Gen1 B58 by adapting a proven GM high-pressure pump in place of the factory unit. Stage 1 uses a GM LT1 pump for roughly +60% flow; Stage 2 steps up to a GM LT4 pump for additional capacity. Each kit includes a billet adapter plate, alignment tool, low-pressure line, and harness, and enables via a simple tune flash.

SPECS

• Stage 1: GM LT1 high-pressure pump (approx. +60% flow)
• Stage 2: GM LT4 high-pressure pump (additional flow capacity)
• Includes billet adapter plate, alignment tool, low-pressure line, and wiring harness
• Requires a tune flash to enable the upgraded pump ("Stage 1" / "Stage 2" mode)
• Fits Gen1 B58 only (2014–2020)
• For off-road / competition use

PARTS INCLUDED

• GM high-pressure pump (LT1 for Stage 1 / LT4 for Stage 2)
• Billet adapter plate and alignment tool
• Low-pressure feed line and wiring harness

TECH RESOURCES

• REQUIRES a tune flash to enable the pump — MHD Super License (BMW B58)
• Fits Gen1 B58 (2014–2020) F-chassis 240i/340i/440i, early G20 M340i, and 540i (Gen1)

VEHICLE APPLICATIONS