Bluetooth Flex Fuel Kit, B8/B8.5 Audi 3.0T

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

This is a complete plug-and-play kit to install a Bluetooth ethanol sensor in your Audi S4 in about 30 minutes.


  • New 5/16" E85 compatible fuel lines for your engine bay
  • Genuine Continental ethanol sensor
  • Fuel-It! Bluetooth analyzer
  • Billet 5/16" quick connect fittings for sensor
  • Oetiker crimp clamps to secure your new fuel lines
  • Includes both Bluetooth App & 5v analog output. Bluetooth E-content reading can be viewed with the Fuel-It! ECA iPhone/Android app (pictured below)

Download installation instructions here!