AUDI S4 B8 & B8.5 Flex Fuel Ethanol Content Sensor for E85 Fuel Monitoring

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)

Kit includes:

• 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

Download the Fuel-It! ECA app here:

Vehicle Fitment

• Audi S4 B8
• Audi S4 B8.5

Burger Motorsports shipping & returns

• 30-day satisfaction guarantee: BMS tuning products can be returned in like-new condition in their original packaging within 30 days of shipment for a refund.
• Fees: 20% restocking fee on all returns; the customer pays all shipping charges.
• Not returnable: spark plugs that have been installed or gapped, and wheel spacers, lug bolts, lug nuts or wheel studs that have been mounted.
• Express shipping does not guarantee a delivery date. Import duties and taxes are not included in the price.

To start a return or ask a question, contact us with your order number.