Fuel-It! Bluetooth/CANflex Flex Fuel Kit - BMW G-Chassis Gen3 B58TU2 (2025+)

OVERVIEW

The Fuel-It! Bluetooth/CANflex Flex Fuel Kit for the Gen3 B58TU2 lets the latest 2025+ B58-powered BMWs safely run E85 and any ethanol blend by monitoring real-time ethanol content and feeding it to your tune. Built around a genuine Continental ethanol content sensor with a stainless braided PTFE fuel line and plug-and-play wiring, it streams your fuel's ethanol percentage to the free Fuel-It!/BMS smartphone app over Bluetooth — unlocking the bigger power and cooler charge temps of flex fuel. This is the updated kit for the newest B58TU2 (Gen3) motor; earlier 2019–2024 cars use the Gen2 B58 kit. Installs in about 30 minutes.

SPECS

• Genuine Continental ethanol content sensor (ECA)
• Stainless braided PTFE fuel line with protective nylon sheath and custom fitting
• Plug-and-play wiring harness — CANflex (CANbus, LED, auto trans) or Universal (manual / bootmod3), per configuration
• Free iOS/Android app over Bluetooth — live ethanol %, fuel pressure, and temperature
• Designed for the Gen3 B58TU2 motor (2025+); not interchangeable with the Gen2 B58 kit
• Approximately 30-minute installation
• Configurations: CANflex LED ECA + PnP harness, CANflex + Universal harness, Legacy Bluetooth ECA, or Fuel Lines Only (with/without pressure sensor)
• For off-road / competition use; requires a flex-fuel-capable tune to blend E85

PARTS INCLUDED

• Continental ethanol content sensor (per configuration)
• CANflex or Bluetooth ECA module and wiring harness (per configuration)
• Stainless braided PTFE fuel line and custom fitting
• SuperLube and mounting hardware

TECH RESOURCES

• REQUIRES a flex-fuel-capable tune to blend E85 — pair with our MHD Super License (BMW B58); also compatible with JB4, bootmod3, and ECUTeK flex tunes (confirm B58TU2 support with your tuning platform)
• Flex fuel is intended for off-road / competition use
• Approximately 30-minute installation

VEHICLE APPLICATIONS