Dorch Engineering B58 Gen1 Flex Fuel ECA – Plug & Play

The Dorch Engineering Flex Fuel ECA kit enables true CAN-based flex fuel tuning for B58 Gen1 vehicles. With a fully plug-and-play harness and OEM-style integration, it allows the ECU to automatically adjust for changing ethanol content without the need for manual map switching.

Fitment: BMW B58 Gen1 Models
SKU: Dorch B58 ECA Kit

Key Features

True CAN-Based Flex Fuel Control

– Real-time ethanol content monitoring
– Automatic ECU fuel and timing adjustment
– No map switching required

Full Plug & Play Integration

– OEM harness integration
– Reversible installation
– Hidden sensor and hose routing

Designed for BM3 & MHD Flex Fuel

– Seamless tuning platform compatibility
– Accurate ethanol data logging
– Essential for flex fuel builds

Benefits

– Safely run pump fuel, E blends or full E85
– Maximises performance on ethanol
– Future-proofs the fuel system

Fitment

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

Installation Notes

– Flex fuel enabled tune required
– Recommended with upgraded HPFP
– Ethanol sensor included

About Dorch Engineering

Dorch Engineering’s plug-and-play flex fuel solutions are designed to integrate seamlessly with modern BMW ECUs for safe and reliable ethanol performance.