Description
If you’re running E85 or ethanol blends in your Audi S4, the Fuel-It! Bluetooth Flex Fuel Kit is an essential upgrade. This complete plug-and-play system allows you to monitor your exact ethanol content in real time using the Fuel-It! or JB4 app on your smartphone or tablet.
Designed specifically for the Audi S4 B8 and B8.5 platforms, this kit installs a Bluetooth-enabled ethanol sensor in approximately 30 minutes with no permanent modifications required. Accurate ethanol content data helps ensure safer tuning, improved consistency, and maximum performance when running ethanol-based fuels.
The system supports both Bluetooth app monitoring and a 5V analog output, making it fully compatible with JB4 and flash tuning setups. All included components are engineered for E85 compatibility and OEM-style fitment within the engine bay.
Kit Includes
-
5/16" E85-compatible fuel lines for the engine bay
-
Genuine Continental ethanol sensor
-
Fuel-It! Bluetooth analyzer
-
5/16" quick-connect fitting
-
Oetiker crimp clamps for secure fuel line installation
-
Bluetooth app support and 5V analog output for JB4 or flash tuning
Additional Information
-
Bluetooth functionality requires a compatible smartphone or tablet
-
Replacement fuel lines are available separately
Fitment
-
Audi S4 B8
-
Audi S4 B8.5
Important Notes
-
Verify compatibility before installation if unsure
-
Designed for ethanol and E85 fuel monitoring applications
This plug-and-play flex fuel solution delivers accurate real-time ethanol data and reliable fueling support, making it a must-have upgrade for any E85-powered Audi S4 B8 or B8.5 build.
