The R44 Ethanol Flex Fuel Kit has been developed specifically for Stage 2-tuned G8X BMWs running the S58 engine — including the G87 M2, G80/G81 M3 and G82/G83 M4. Designed for drivers who want to extract more performance from their existing Stage 2 setup, this kit enables you to safely run ethanol-blended fuels, most commonly an E30 mix, for increased power and smoother combustion.
This comprehensive solution includes a genuine Continental ethanol content sensor, Precision Raceworks 5/16” Ethanol 360° AN fittings, and the MHD CANbus Flex Fuel Quick-Install Kit. Once installed, your vehicle will have real-time ethanol content monitoring and seamless ECU integration via MHD — allowing your Stage 2 tune to adapt accordingly.
This is not a tuning solution itself, but rather the hardware needed to support flex fuel compatibility on already Stage 2 tuned vehicles. With high-quality, trusted components and a straightforward installation process, this kit is ideal for enthusiasts looking to upgrade their fuel system and maximise their current setup’s potential.
Key Features:
Developed for BMW G8X S58 engines already running Stage 2 tunes
Enables safe use of ethanol blends (e.g. E30) for enhanced performance
Real-time ethanol content monitoring via MHD
Plug-and-play compatibility with CANbus integration
Includes premium-grade fittings and sensors
Designed for daily, fast-road, and track use
What’s Included:
Continental Ethanol Content Sensor
Precision Raceworks 5/16” Ethanol 360° AN Fittings
MHD CANbus Flex Fuel Analyser Quick-Install Kit
Compatibility:
BMW G87 M2 Coupe
BMW G80 M3 Saloon
BMW G81 M3 Touring
BMW G82 M4 Coupe
BMW G83 M4 Convertible
Suitable only for vehicles already running Stage 2 software that supports flex fuel tuning.
