Dorch Engineering B58 Gen 2 Flex Fuel ECA Kit

Now that Gen 2 B58 tuning software supports true CAN-based Flex Fuel tuning, Dorch Engineering offers their own plug-and-play ECA (ethanol content analyser) solution, removing much of the need for older Bluetooth-based ethanol sensors. A CAN-based ethanol sensor doesn't just monitor ethanol content, it directly communicates with the DME for full Flex Fuel operation.

With a Flex Fuel tune in place, the DME automatically adjusts between a high-powered E85 map, a pump gas map, and everything in between, all happening live, on the fly, based on real-time CAN communication with the sensor. No more doing math at the gas pump to work out which map to flash or how many gallons of ethanol to mix in.

Installation involves genuinely zero cutting and zero wire-taps. The kit is fully reversible and truly plug-and-play, with wiring integrating directly into the OEM harness, and hoses and the sensor tucking seamlessly enough to allow full reinstallation of all OEM sound insulation foam and engine covers, no compromised fit, no visible modification.

If you already own one of Dorch Engineering's ECA hose/sensor sets, an "electronics only" package is available to upgrade to CAN-ECA. This package will also fit nearly any other custom setup that houses a Continental ethanol sensor in a similar engine bay position, contact Dorch Engineering directly to confirm compatibility with your current sensor setup.

Why Choose This Flex Fuel ECA Kit

• CAN-based sensor communicates directly with the DME, not just a passive monitor
• Automatic, real-time tune adjustment between E85 and pump gas maps
• Removes the need for manual ethanol blend calculations at the pump
• Zero cutting, zero wire-taps, fully reversible installation
• Wiring integrates into the OEM harness, hoses and sensor tuck seamlessly
• Full reinstallation of OEM sound insulation foam and engine covers possible
• Electronics-only upgrade package available for existing hose/sensor set owners

Compatibility

• BMW G42 M240i (B58 Gen 2)
• BMW G20/G21 M340i (B58 Gen 2)
• BMW G22/G23/G26 M440i (B58 Gen 2)
• BMW G29 Z4 M40i (B58 Gen 2)
• BMW X3 M40i G01 (B58 Gen 2)
• BMW X4 M40i G02 (B58 Gen 2)
• Toyota GR Supra A90/A91 (B58 Gen 2)