Dorch Engineering - Flex Fuel ECA || B58 (Gen1)

Dorch Engineering CAN-Based Flex Fuel ECA Kit

True Flex Fuel Integration for Gen 1 B58 Engines

🚀 Unlock Seamless Flex Fuel Capability with Zero Guesswork

With MHD and Bootmod3 (BM3) now offering native CANbus Flex Fuel support for Gen 1 B58 platforms, Dorch Engineering proudly introduces a fully plug-and-play ECA solution that delivers precise ethanol content readings directly to the DME. No Bluetooth modules. No math. No flash switching. Just real-time, automatic tuning adjustments — on the fly.

💡 What Makes This Kit Different?

This isn’t just an ethanol sensor. It's a direct CAN integration kit that communicates live with the DME, enabling your Flex Fuel tune to automatically blend between pump gas, full E85, or anything in between — with no user intervention required. From daily driving to full-send pulls, the DME will dynamically adjust fueling, timing, and boost for the best possible performance and safety.

🔧 Truly Plug and Play Installation

• ZERO cutting

• ZERO wire taps

• Fully reversible

• OEM-level fit and finish
  The Dorch ECA kit integrates directly into the factory wiring harness and fuel system. All OEM insulation and covers can be reinstalled for a factory-clean look. With the ethanol sensor positioned as close to the injectors as possible, this setup ensures instantaneous ethanol readings for maximum accuracy.

📦 Installation Time:

• Add ~30 minutes to an HPFP install

• Or ~1 hour standalone install (DIY-friendly with detailed instructions)

✅ Kit Contents:

• Zeitronix ECA-CAN Module

• Genuine Continental Ethanol Sensor

• Custom Dorch PTFE Hose Set

• Dorch Plug-and-Play ECA Harness

• Pre-cut Firewall Grommet

• Mounting Accessories

• Full-color DIY install instructions

🔌 Compatibility / Vehicle Fitment:

Supported Platforms – Gen 1 B58 (2016–2019):

F Series

• F20/F21: M140i, xDrive M140i

• F22/F23: M240i, xDrive M240i

• F30/F31/F34: 340i, xDrive 340i

• F32/F33/F36: 440i, xDrive 440i

G Series (up to 2019 MY only):

• G30/G31: 540i, xDrive 540i

• G32: 640i, xDrive 640i

• G11/G12: 740i, xDrive 740i

• G01: X3 M40i

• G02: X4 M40i

⚠️ Note: Not compatible with B58TU (2020+ B58 vehicles)

🔁 Already Running a Dorch ECA Hose/Sensor Kit?

We offer an “Electronics Only” upgrade package for existing users who want to switch to CAN-based integration. This package also fits most custom setups with a Continental ethanol sensor in similar locations.
📧 Contact: info@dorchengineering.com for compatibility.

🎯 Why You Need This Kit:

• True Flex Fuel support: DME-controlled real-time adjustments

• No tuning hassle: No map switching, no blending math

• Track-ready accuracy: Instant ethanol readings from near-injector placement

• OEM+ install: Fully reversible with no visible modifications

• Future-proof: Built for the latest MHD & BM3 Flex Fuel functionality