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
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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
- If you are using an Android product the app can be
Replacement fuel lines are also available ala cart.
Vehicle Fitment
- 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.
*Free shipping in USA on complete kits only.
