Dorch Engineering B58 Gen1 DS25 HPFP Upgrade

The Dorch Engineering DS25 high-pressure fuel pump is the next evolution in B58 Gen1 direct-injection fuelling, delivering a major increase in flow capacity to support high-power and full flex fuel builds. Designed as a true plug-and-play upgrade, it retains full factory DME control while providing the headroom required for larger turbos and ethanol blends.

Fitment: BMW B58 Gen1 Models
SKU: DE-58-2001-14

Key Features

Stage 2.5 Direct Injection Fueling Upgrade

– Supports up to approx. 750whp on pump fuel
– Full E85 capability up to approx. 550whp
– Operates efficiently up to 250 bar

True Plug & Play Installation

– OEM-style hose routing
– No cutting or bending of fuel lines
– Retains factory DME safety strategies

Complete Installation Kit

– High pressure line
– Low pressure PTFE line
– Plug-and-play harness
– Mounting hardware

Benefits

– Massive fueling headroom for hybrid and big turbo builds
– Enables true flex fuel tuning
– OEM-level reliability and drivability

Fitment

– BMW M140i
– BMW M240i
– BMW 340i
– BMW 440i
– BMW 540i (Gen1 up to 2019)
– BMW 640i / 740i (Gen1 up to 2019)
– BMW X3 M40i / X4 M40i (Gen1 up to 2019)

Installation Notes

– Software update required (BM3 / MHD / MG Flasher support)
– Professional installation recommended
– Ideal upgrade when running ethanol blends

About Dorch Engineering

Dorch Engineering are global leaders in BMW direct-injection fuelling upgrades, producing OEM-integrated high-flow pumps designed for high-horsepower and flex fuel applications.