Description
If you’re running E85 or ethanol blends in your Audi TT RS or RS3 2.5T, 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 2017+ Audi TT RS and RS3 models, this kit installs a Bluetooth ethanol sensor in approximately 15 minutes with no permanent modifications required. Accurate ethanol content data helps ensure safer tuning, improved consistency, and optimized 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 components are engineered for E85 compatibility and OEM-style integration within the engine bay. Replacement fuel lines are available separately if needed.
Kit Includes
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Genuine Continental ethanol sensor
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Upgraded fuel lines with nylon sheathing
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Fuel-It! proprietary billet fittings
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Fuel-It! Bluetooth analyzer
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Plug-and-play harness
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Bluetooth app support and 5V analog output for JB4 or flash tuning
Additional Information
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Bluetooth functionality requires a compatible smartphone or tablet
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European versions of the RS3 8Y and TT RS platforms require modifications to use the kit and stock connectors
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Verify compatibility before installation if unsure
JB4 Wiring Information
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Audi JB4 platform
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Connect the white wire to position #16 on the JB4 25-pin harness
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Select WMI Ethanol Setup option 1 to enable pin location 15/16 flex fuel input
Vehicle Fitment
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2017+ Audi TT RS 2.5T
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2017+ Audi RS3 2.5T
This plug-and-play flex fuel solution delivers precise real-time ethanol monitoring and seamless tuning integration, making it the ideal upgrade for any 2017+ Audi TT RS or RS3 2.5T running E85 or ethanol blends.
The standard shipping rate applies to orders within the continental United States. If you intend to place an order outside of the continental US, please reach out to support@x-ph.com for assistance.
