The eFlexEco conversion kit is designed for drivers looking to get the most out of their engine, while also reducing their carbon footprint with eco-friendly driving. eFlexEco allows you to cut down on emissions with the use of high-octane E85 fuel. The included ethanol sensor ensures optimal performance with any mixture of E85 and traditional gasoline. The first step toward more sustainable driving starts with eFlexEco.


Includes FREE delivery

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

First of its Kind

eFlexEco is the first flex fuel conversion kit available for hybrids, allowing you to seamlessly run on E85, gas, or any blend with the same benefits of your hybrid vehicle.

Easy & Safe

Thanks to our eFlexFuel technology, once you have installed your kit, fuel mixing and pump variation are handled automatically.

Always Reliable

Designed to last the lifetime of your vehicle, our product comes with a 2-year warranty and military-grade durability in mind to withstand dirt, dust and water.


eFlexApp is able to monitor your eFlexFuel device in real time. eFlexApp recognizes the version of your eFlexFuel device, and offers various features depending on the version used. eFlexApp includes both portrait and landscape mode support, and is available via APP Store and Google Play.

With eFlexApp, you are able to monitor ethanol content, injector duty cycle, fuel temperature, ambient engine temperature, injector activity as well as cold enrichment. You can also change language, temperature unit or visual theme.

eFlexfuel conversion kit package content

Vehicle specific conversion kit includes everything needed for DIY installation:

  • eFlexEco control unit
  • Ethanol sensor
  • User manual with installation instructions
  • Wiring harness with a temperature sensor (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)
  • 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.


From sustainability to performance or power, it doesn’t matter where your automotive interests lie, we have an eFlexFuel product for you

Transform Your Carbon Footprint


Engineered for the environmentally and cost-conscious driver, the switch to E85 has never been easier or more affordable. Learn more

Transform Your Peformance


Engineered for the driver looking for extra performance and control, do more with access to our eFlexApp and eFlexTuner. Learn more

Transform Your Power


Engineered for the enthusiast, take full control with real-time mobile adjustments, tuning plus custom fuel maps and logging. Learn more