Effortless performance with eFlexPlus E85 Flex Fuel Conversion Kit
You don’t have to be a tuning expert to get more out of your vehicle while driving on E85. The eFlexPlus E85 flex fuel kit gives you the power you’re after and the ability to change settings on the fly.
Drive on E85, gasoline, or a combination of the two
Flex fuel kit specific to your vehicle with an easy DIY install (if you choose to install it yourself)
With our tuning software, you have optional custom tunes and setting let you fine-tune from anywhere - even without a dyno
Custom tunes and settings
Optimize your engine. The eFlexPlus is a more streamlined tuning experience than eFlexPro kit. This is the ideal E85 fuel conversion for the amateur racer and offroad driver.
Unleash the full power with eFlexPro E85 Flex Fuel Conversion Kit
The eFlexPro is designed for technical auto enthusiasts and professional drivers who want an E85 flex fuel conversion option for more power and better performance. Adding horsepower is expensive. With eFlexPro, you can offset some of those costs and get the power you want with the ability to create your own E85 tunes.
Drive on E85, gasoline, or a combination of the two
Flex fuel kit specific to your vehicle with an easy DIY install (if you choose to install it yourself)
With our tuning software, you have optional custom tunes and setting let you fine-tune from anywhere - even without a dyno
Custom tunes and settings
If maximum power is what you’re after, choose eFlexPro. It provides the most power gains of all the eFlex Fuel capability kit options. Drive on with an E85 conversion or gasoline - optimize your vehicle for the way you like to drive.
Plug&Play installation - An experienced mechanic will install in 1h-2h. For first time DIY installation, expect to double the time needed.
Technical specs
Make & Model
Year
Engine
Power
Always Optimized Fully Automatic Flex Fuel
Cooler & Cleaner Engine
Complete System, No Tuning Needed
Up to 20% Increase in Performance
Your Fuel System Verified
Dynamically adjust engine tune to match fuel
Available performance and eco tunes
Select performance or eco tunes via eFlexApp
Create and save custom dyno tunes
Pro grade eFlexTuner tuning software
+ What's included
Control unit (3” x 5 1/5” x 1” in)
Ethanol sensor
Wiring harness specific to your vehicle with an external temperature sensor (for 1-8 cylinders)
Two additional analog inputs that plug in to the engine’s own sensors (MAP, MAF, TPS or WBO) - included only in eFlexPro
Cable ties
Male fuel injector connectors
Fuel hose
Fuel line quick connectors
Fuel line disconnect tool
Hose clamps
Manual
+ eFlexApp
All eFlexFuel E85 kits operate via a wireless Bluetooth connection. This allows the eFlexApp to recognize the version of your E85 kit and monitor your engine in real-time while driving on E85, gasoline, or a combination of the two. With eFlexPro you can choose from six driving modes - three presets and three customizable ones. The app also lets you choose, monitor, and customize.
Features
Monitor ethanol content, fuel temperature, ambient engine temperature, injector duty cycle and cold enrichment, etc.
Choose your driving mode (Economy, Dynamic, Sport)
Display OEM engine sensor data: MAP, MAF, TPS, or WBO
Custom E85 tunes (Created with eFlexTuner)
1
3
+ eFlexTuner
eFlexTuner is a free PC software that connects to eFlexFuel kits via Bluetooth. Create your own custom E85 tunes and switch them while driving from the eFlexApp.
Note: If your car is modified you can use E85 with eFlexFuel. If this is the case, please list all the main engine modifications on the checkout page. Our technical team will ensure that your setup is fit for E85.
* Power and torque increase depends on your engine technology and/or your custom built of the engine.
Not legal for sale or use on pollution-controlled vehicles
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.
SKU: U-EF-PLUS 
SKU: U-EF-PLUS 
Always Optimized Fully Automatic Flex Fuel
Cooler & Cleaner Engine
Complete System, No Tuning Needed
Up to 20% Increase in Performance
Your Fuel System Verified
Not legal for sale or use on pollution-controlled vehicles