BMW G Chassis M50i N63TU2 / TU3 Flex Fuel Ethanol Content Sensor for E85 Fuel Monitoring

Stop Guessing. Start Knowing Your Exact Ethanol Content.

Running E85 on your N63TU2 / TU3 Powered BMW? Ethanol content at the E85 pump can vary from E50 to E85 or higher depending on season and station. Regular premium gas can have up to 10% ethanol at some stations. No more calculating gallons at the pump and guessing ethanol percentage. Just open the app and know.

Key Features

• Real-time ethanol content monitoring via Bluetooth
• Displays exact ethanol percentage (E-content) in the Fuel-It! or JB4 app
• 0–5V analog output for JB4 or flash tuning integration
• Genuine Continental ethanol sensor for OEM-grade accuracy
• Plug and play fuel line integration
• Ethanol safe PTFE fuel lines and fittings
• Installs in approximately 30 minutes
• No cutting or permanent modification required

Why You Need an Ethanol Sensor on Your N63TU2 / TU3

E85 pumps rarely dispense true E85. Seasonal blends can drop into the E50 range without notice. If you’re tuning for ethanol, this matters.

With this kit you can

• Dial in your exact E85 blend every fill-up
• Avoid running too much ethanol on a pump gas map
• Maximize timing and boost safely on ethanol maps
• Maintain consistent performance at the track
• Protect your engine from unknown fuel mixtures

The Bottom Line

If you’re running E85 on your N63TU2 / TU3, a flex fuel sensor isn’t optional, it’s essential.

Power, consistency, and safety all start with knowing exactly what’s in your tank.

Download the Fuel-It! ECA app here:

 

Vehicle Fitment

The N63TU2 kit is compatible with the following:

• 2018-2019 BMW M550i xDrive 4.4T N63TU2 (G30)
• 2016-2019 BMW 750i/750Li 4.4T N63TU2 (G11/G12)

The N63TU3 kit is compatible with the following:

• 2020-2023 BMW M550i xDrive 4.4T N63TU3 (G30)
• 2020-2022 BMW 750i/750Li 4.4T N63TU3 (G11/G12)
• 2020-2022 BMW ALPINA B7 xDrive 4.4T (G12)
• 2019+ BMW M850i xDrive 4.4T N63TU3 (G14/G15)
• 2020+ BMW M850i xDrive Gran Coupe 4.4T N63TU3 (G16)
• 2022+ BMW ALPINA B8 Gran Coupe 4.4T (G16)
• 2020-2023 BMW X5 M50i 4.4T N63TU3 (G05)

*For the BMW G-series JB4 platform connect the white wire to position #4 on the JB4 25 pin harness. Select WMI page bit 0 to enable.