Know your exact ethanol content in real-time via the Fuel-It! or JB4 app on your smartphone or tablet.

If you're running E85 or ethanol mixes in your Mazda 3, you need this kit!

This is a complete plug and play kit to install a Bluetooth ethanol sensor in your 2021+ Mazda 3 2.5L Turbo (Check compatibility for your platform below).

The kit includes the following:

• Genuine Continental ethanol sensor
• Two stainless steel braided fuel lines with black nylon sheathing to protect your other engine bay components
• Proprietary custom billet fittings for plug and play OEM integration
• Fuel-It! Bluetooth analyzer (iPhone or Android app must be downloaded to use this kit)
• Plug and play harness
  

• Includes both Bluetooth App & 5v analog output for JB4 or flash tuning

• Bluetooth (iPhone or Android app must be downloaded to use this feature)
• If you are using an Apple product the app can be found by clicking here
• If you are using an Android product the app can be found by clicking here

Replacement fuel lines are also available ala cart.

This kit is compatible with the following

• 2021+ Mazda 3 SKYACTIV® 2.5L Turbo

*For the Mazda JB4 platform connect the white wire to position #4 on the JB4 25 pin harness. Select WMI Ethanol Setup option 0 to enable pin location 2/3/4 flex fuel input.

*We have also made it optional to purchase all the items ala-cart should you choose but for the kit to work it must include the Fuel Lines, Ethanol Sensor, and Analyzer.

*If you aren't sure whether this kit fits your car, send us a picture of your engine bay with the engine cover removed to [email protected]

*Ethanol Sensors don't actually read the ethanol content, the readings are based on the absence of gasoline, so if your fuel is contaminated your ethanol readings may be artificially elevated.

Install Video

Product Video