Fuel-It Bluetooth Flex Fuel Kit – Toyota GR Supra (B48/B58)

OVERVIEW

If you are running E85 or ethanol mixes in a 2020 or newer Toyota GR Supra, this is the kit that lets the car and your tune know exactly what is in the tank. It is a complete plug and play package for installing an ethanol content sensor in the Mk5 Supra, and Fuel-It quotes roughly 30 minutes of installation time.

The kit reads ethanol content in real time and reports it to your phone or tablet through the Fuel-It! app or the JB4 app. Alongside the wireless output it also provides a 5V analog signal, so a JB4 piggyback or a flash tune can read the ethanol content directly and adjust fueling and timing accordingly.

Fuel-It builds the kit around a genuine Continental ethanol sensor, new E85-compatible fuel lines for the engine bay and a plug and play harness, so no cutting or splicing of factory wiring is required. Both B58 3.0L and B48 2.0L Supra variants are covered.

SPECS

• Ethanol sensor: genuine Continental unit
• Fuel lines: new 5/16" E85 compatible lines for the engine bay
• Analyzer: Fuel-It! Bluetooth analyzer, reporting live ethanol content to the Fuel-It! or JB4 app
• Outputs: Bluetooth plus 5V analog output for JB4 or flash tuning
• Wiring: plug and play harness, no splicing into factory wiring
• Quoted installation time: approximately 30 minutes
• Compatible tuning platforms per Fuel-It: JB4, MHD, bootmod3 and EcuTek
• Also offered as a CANbus ECA configuration and as fuel-lines-only options; see the variant selector for the exact configuration

PARTS INCLUDED

• Genuine Continental ethanol content sensor
• New 5/16" E85 compatible fuel lines for the engine bay
• Fuel-It! Bluetooth analyzer (Bluetooth app and 5V analog output)
• Plug and play harness
• Contents vary by configuration selected — fuel-lines-only options do not include the analyzer, and the CANbus option substitutes a CANflex ECA and adds an LPFP pressure sensor. See the variant selector.

TECH RESOURCES

Additional Parts Required

• Fuel-It! smartphone app — the iPhone or Android app must be purchased separately to use the Bluetooth analyzer and read ethanol content wirelessly.
• A tuning platform that can read the flex fuel signal. We stock: JB4 Tuner for 2020-2026 Toyota Supra Mk5 and the MHD Super License for Toyota Supra B58. Without a compatible tune the sensor reports ethanol content but nothing acts on it.
• Universal harness — Fuel-It states that manual transmission cars and cars running a bootmod3 (BM3) tune require the universal harness instead of the standard plug and play harness. Confirm your configuration with Speed Logic before ordering.
• E85 or an ethanol blend, and fuel system capacity appropriate to the ethanol content you intend to run.

Installation

• Fuel-It! official install guide library — wiring and setup guides published by the manufacturer, including analyzer and controller wiring.
• Fuel-It does not publish a downloadable PDF installation guide specific to the Mk5 Supra kit; contact Speed Logic or Fuel-It for Supra-specific installation support.

Notes

• Fuel-It does not publish an official part number for this kit, so no part number is listed. Fitment above follows Fuel-It's published application data; confirm your transmission and tuning platform with Speed Logic before ordering.

VEHICLE APPLICATIONS