The patented eFlexPro® conversion kit is designed for the auto enthusiast and professional drivers. Everything that exists with our eFlexEco and eFlexPlus products can be found here. The possibilities are endless with the first-ever flex fuel convertor with fully customizable fuel maps, one that can be connected to two external engine sensors. With eFlexPro, you can optimize your vehicle as you want.

949,00 €

Includes FREE delivery

Available in stock — This item usually ships within 24 hrs during business days



eFlexApp can monitor your eFlexPro in real time. Choose your driving mode, monitor the ethanol content, engine RPM, fuel temperature, engine temperature, injector duty cycle, injector activity, engine and fuel temperature, and cold enrichment.

Available via APP Store and Google Play.


Use eFlexTuner to adjust the engine load and RPM based enrichment with 3D fuel maps. Adjust further cold start enrichment. Save up to three custom settings to eFlexApp.

Package content


The vehicle specific conversion kit includes everything needed for DIY installation:

  • eFlexPro control unit
  • Ethanol sensor
  • User manual with installation instructions
  • Wiring harness with a temperature sensor and two additional sensor wires (for 1-8 cylinders)
  • Cable ties
  • Male connectors (10 pieces)
  • Fuel hose 40”
  • Fuel line quick connectors
  • Hose clamps
  • Tools for detaching the fuel line

Technical specification

  • 1-8 injector channels
  • Ethanol content detection
  • Automatic cold start
  • Wireless connection via Bluetooth LE 
  • Free eFlexFuel app
  • Self-diagnosis with fault code memory
  • External temperature sensor
  • Waterproof control unit (IP68)
  • Control unit size (3” x 5 1/5” x 1”)
  • 2-year limited warranty
  • Free product support
  • Designed and manufactured in Finland, EU

Pending U.S. emissions certification; your eFlexFuel™ system is sold only for competition and off-road use.

Package includes the following: control unit, ethanol sensor, manual, stickers, product box, eFlexPro graphic cover

Attention Californian customers!

eFlexFuel products are not legal for sale or use on pollution-controlled vehicles in the state of California. Every reference to on road highway use on this site applies to other markets. We insist that our customers always make sure to follow their local rules and regulations.

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