Dorch Engineering B58 Gen1 DS3 HPFP Upgrade

The Dorch Engineering DS3 HPFP is the highest flowing single high-pressure fuel pump upgrade available for the B58 Gen1 platform. Designed as a true plug-and-play solution, it massively increases fueling capacity to support high horsepower, big turbo and full flex fuel builds while retaining OEM control and drivability.

Key Features

Stage 3 High-Flow Fueling Upgrade

– Supports up to ~860whp on pump fuel
– Up to ~630whp on full E85
– Around 20% more flow than DS25

True Plug & Play OEM Integration

– Direct drop-in replacement
– Retains full DME control like factory
– No cutting, bending or modification required

Complete Installation Kit

– Upgraded high-pressure fuel line included
– OEM-style routing for easy install
– Designed to avoid interference with other components

Built for High Power Builds

– Designed for hybrid and big turbo setups
– Essential for high ethanol blends (E50–E85)
– Compatible with upgraded injectors and tuning solutions

Benefits

– Massive fueling headroom for high horsepower builds
– Enables true flex fuel capability
– Maintains OEM drivability and cold start behaviour
– Proven reliability with lifetime warranty support

Fitment

– BMW M140i (F20 / F21)
– BMW M240i (F22 / F23)
– BMW 340i / 440i (F3x)
– BMW 540i / 640i / 740i (Gen1 up to 2019)
– BMW X3 M40i / X4 M40i (Gen1 up to 2019)

Engine: B58 Gen1 (NOT compatible with Gen2/B58TU)

Installation Notes

– ECU tuning required (Bootmod3 / MHD / MG Flasher supported)
– Professional installation recommended
– Works best when paired with upgraded injectors
– Ideal for Stage 2+, hybrid turbo and big turbo builds