eFlexFuel App

eFlexFuel App is a free app for the eFlexFuel E85-Upgrade.

With the app is it possible to monitor different data from eFlexFuel.

Application is not required for the use of eFlexFuel.


  • Android operating system (min. 6.0)
  • iOS (min. 7.0)


  • Injector duty cycle
  • Injector duty cycle chart
  • Injector activity
  • Fuel ethanol content
  • Fuel contamination detection
  • Fuel temperature
  • Temperature (current, min, max)
  • Cold enchrichment state
  • Fault code check
  • Stored fault codes check
  • Firmware version


Control unit version is located on the nameplate.

Check the compatibility for your vehicle

eFlexFuel is not available for direct injection engines (CGI, FSI, GDI, EcoBoost, etc.) or diesel engines.

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If you cannot find your vehicle you can leave us a compatibility request. We add vehicles to our database when we are asked for compatibility.

a) VIN code is 17 characters. b) i, o, q are not allowed.

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miles with ethanol

and counting...

based on cumulative eFlexFuel sales and average yearly drive