Fuel-It Audi RS3 & TT RS Flex Fuel Kit (8V/8S, 2.5T Gen 3, 2017+) - Plug & Play E85 with Bluetooth Ethanol Content Sensor (Continental) + 0-5V Output

Audi RS3 / TT RS E85 conversion and fuel composition monitor for 2.5 TFSI Gen 3

Unlock safe, repeatable performance on ethanol blends with this direct-fit fuel composition sensor package for the five-cylinder 2.5 TFSI. Get live ethanol percentage to your smartphone via Bluetooth, plus a 0 to 5 volt analogue signal for integration with a JB4, standalone ECU or an analogue gauge. Genuine Continental sensor, OE-style quick connectors, ethanol-safe hose and robust Oetiker clamps deliver a tidy, leak-free install in around 15 minutes.

We have installed and used this kit ourselves and feedback from our customers has been excellent. Accuracy, connection stability and the overall build quality make it the go-to ethanol blend monitor for RS3 and TT RS owners who want reliable data for tuning on E blends.

Why enthusiasts choose this setup

• Direct-fit in the engine bay with quick-release fittings. No cutting of factory hard lines.
• Genuine Continental fuel composition sensor for trusted accuracy and long-term reliability.
• Bluetooth analyser streams live E content to your phone so your calibrator can dial in power, safety and drivability.
• Optional 0 to 5 volt analogue output to feed a JB4, standalone ECU or an external ethanol gauge.
• E85-safe 5/16 inch hose and OE-style connectors for a factory-look finish.
• Durable Oetiker crimp clamps included for a secure, leak-free installation.
• Typical installation time around 15 minutes with basic hand tools.

What you get

• New 5/16 inch ethanol-compatible fuel lines for the engine bay
• Genuine Continental fuel composition sensor
• Bluetooth ethanol analyser module
• 5/16 inch quick-connect fitting
• Oetiker crimp clamps
• Optional 0 to 5V analogue output harness for JB4 or an analogue gauge

Bluetooth functionality uses the Fuel-It app for iPhone and Android, available separately from the relevant app store.

Vehicle fitment

• Audi TT RS Mk3 8S 2017+
• Audi RS3 8V 2017+
• For 2.5 TFSI Gen 3 five-cylinder turbocharged models

Part numbers

• FI092 with crimping tool
• FI093 without crimping tool

Professional fitting and support

Prefer us to install it for you? Book professional fitting with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quotation, availability and advice on linking the analogue output to your tune, JB4 or gauge.

Compatibility check

We complete a compatibility check prior to dispatch to make sure it fits your car. Please provide your UK registration number or the last 7 digits of your VIN at checkout.

Important notes

Ethanol sensors infer alcohol content based on the absence of petrol. Contaminated fuel can cause artificially high readings. Always verify fuel quality and ensure your calibration accounts for actual blend.

Manufacturer and warranty

Manufactured by Fuel-It and covered by the Fuel-It Limited Warranty.

Photos

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