Dorch Gen 1 B58 Flex Fuel ECA – Plug & Play

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Return address: QT Parts, Vasarakatu 8B, 37150 Nokia, Finland.

Pre order / made-to-order products

If the product you have ordered is a pre order or made-to-order item, it is not subject to the 14-day right of withdrawal or return under consumer protection laws, as the product is manufactured or sourced specifically based on the customer’s individual order.

If you wish to cancel your order before receiving the product, we will refund 50% of the total order amount.

This condition applies to the following product categories:

• Suspension
• Engine Tuning
• Engine Parts
• Exhaust Systems
• Fueling
• Turbochargers/superchargers
• Drivetrain
• ECE-approved Downpipes

All of the above products are manufactured or sourced individually based on the customer’s order, and therefore cannot be returned after delivery, unless the product has a manufacturing or material defect.

In the event of such a defect, the standard liability for defects as provided by consumer protection legislation shall apply.

Dorch Engineering – CAN Flex Fuel Kit (Gen1 B58)

Now that Gen1 B58 engine tuning software supports true CAN-bus based Flex Fuel adjustment, we are offering our own plug & play ECA solution!

Thanks to the new MHD and BM3 software updates, separate Bluetooth ethanol sensors are no longer truly needed. CAN-based ethanol measurement not only monitors the ethanol content of the fuel but also communicates directly with the Engine Control Unit (DME), enabling full Flex Fuel functionality.

With Flex Fuel programming, the DME automatically adjusts engine maps in real-time according to ethanol content – from a powerful E85 map to regular gasoline (98E5) and everything in between. This all happens on-the-fly via the CAN bus, without manual map changes or refueling calculations.

Completely Plug & Play – no wire cutting or splicing!

The kit is fully reversible and OEM-compatible. The wiring is neatly integrated into the original harness, and all original engine protective foam and covers can be reinstalled.

The ethanol sensor is positioned as close as possible to the fuel injectors, ensuring virtually zero lag in ethanol content measurement – meaning the engine reacts immediately to the actual mixture.

Although a very detailed and DIY-friendly instruction manual is included, the installation of the kit is quick:
Just add about 30 minutes when installing with an HPFP, or about an hour by itself, depending on the installer's experience.

Kit contents:

• Zeitronix ECA-CAN Module

• Custom PTFE Hose Assembly

• Dorch Plug & Play ECA Wiring Harness

• Genuine Continental Ethanol Sensor

• Pre-cut Grommet

• Mounting Hardware

Compatible models:

• BMW 140i / 140xi (F20 / F21)

• BMW 240i / 240xi (F22 / F23)

• BMW 340i / 340xi (F30 / F31 / F34)

• BMW 440i / 440xi (F32 / F33 / F36)

• BMW 540i / 540xi (G30 / G31)*

• BMW 640i / 640xi (G32)*

• BMW 740i / 740xi (G11 / G12)*

• BMW X3 M40i (G01)*

• BMW X4 M40i (G02)*

* Only up to model year 2019 – not compatible with 2020+ B58 engines.