If you're running E85 or ethanol mixes in your Audi S4, you need this kit!

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

This is a complete plug and play kit to install a Bluetooth ethanol sensor in your Audi S4 in about 30 minutes. (Check compatibility for your platform below)

The kit includes the following:

• New 5/16" E85 compatible fuel lines for your engine bay
• Genuine Continental ethanol sensor
• Fuel-It! Bluetooth analyzer
• 5/16" quick connect fitting
• Oetiker crimp clamps to secure your new fuel lines

• 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

This kit is compatible with the following

• Audi S4 B8
• Audi S4 B8.5

*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]

*Link to larger images of install pictures...click here

*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.

PRODUCT VIDEO