Performance
Enjoy better engine performance results thanks to an E85 Flex Fuel conversion
If you're looking to increase your vehicle's performance by up to 20%, consider the eFlexFuel family of products. Our E85 flex fuel conversion kits are designed with the performance enthusiast in mind, allowing you to switch to high octane E85 fuel easily.
E85 means high performance
When you switch to E85 fuel, you'll notice benefits both in your engine and on the road. Since E85 fuel burns cleaner and cooler, your engine will run smoother and more efficiently. Our eFlexFuel E85 conversion kits together with always over 100 octane E85 fuel, deliver up to 20%* more power especially on high performance engines.
For Maximum Power, Turn to E85 Fuel and eFlexFuel Kits
With octane rating always above 100, E85 fuel offers better performance than any pump gasoline available. Since the vehicle ECM used together with eFlexFuel doesn't need to retard ignition or lower the boost pressure under any circumstances, you have more performance at your command whenever you need to call upon it.
The eFlexPlus, eFlexMoto Plus, eFlexPro and eFlexMoto Pro products connect to the eFlexApp and eFlexTuner software, allowing you to easily customize your engine's E85 performance using either your smartphone or laptop. eFlexPlus and eFlexMoto Plus boast three distinct drive modes and an adjustable cold start with eFlexApp; eFlexPro and eFlexMoto Pro, intended for professional use, feature comprehensive engine fuel injection optimization options with eFlexTuner software
E85 is a Race Fuel for the Street
When compared to gasoline, E85 fuel enables a faster ignition time and flame propagation. This leads to higher cylinder pressure and even an increase of more than 15% in both engine torque and power. The resulting increase in exhaust gas flow allows turbos to spool quicker, which leads to significantly increased performance.
Ethanol has over 1/3rd of oxygen by mass, which is higher than that found in oxygenated race fuels that typically are below 1/6th of oxygen by mass. This means that ethanol provides higher injection volumes per ignition – meaning even more power. Since ethanol’s evaporation can absorb more heat from the intake air, it creates a better charge cooling effect and allows the engine to run cooler compared to gasoline
Alcohol fuels are very popular in racing because of their high octane rating, cooler combustion temperatures, and cleanliness. E85 is the fuel used in IndyCar® racing, and alcohol fuels are burned by monster trucks, Champ cars, many dirt track cars, and of course NHRA Top Alcohol dragsters.
Best of all, the ethanol in E85 is mostly distilled from corn, which means every gallon of ethanol you burn at the track helps support American farmers.
Which eflexfuel kit is right for you?
If you've already had your engine modified and tuned for increased performance on gasoline, adding eFlexFuel and using high-octane E85 is the smart choice. Our E85 flex fuel conversion kits work with most tuned engines, so you're adding even more awesome power to your high-performance engine. If you're considering buying a kit for your tuned vehicle, contact our customer service team and let us know what mods you've made. We'll confirm compatibility and recommend the ideal product for you.
- The eFlexPro kit is for enthusiasts who want to take their engine performance to the next level. It includes six (6) pre-configured engine tunes you can enable with our smartphone app, as well as our professional grade tuning software.
- The eFlexPlus kit offers both the “eco” tune and two performance tunes that you can configure with our eFlexApp smartphone app.
All our kits are self-tuning, so they'll automatically adjust to whatever mix of E85 and gasoline you have in your tank.
And when you install any one of our kits, you can use our smartphone app (iOS or Android) to review performance and - on the Plus and Pro models - adjust engine tunes.
Comparing the eFlexFuel E85 Conversion Kit to an ECM Tune
There's no denying that ECM reprogramming, also known as chip tuning, is a great way to modify your engine's performance. It's important to know that you can make tunes for both gasoline or E85, but you cannot use E85 with a gasoline tune or vice versa. Also, since tunes can only be made for a fixed ethanol content level, and the actual ethanol content of E85 varies between 51%-83%, it's rarely optimal to perform a fixed E85 tune.
All of the eFlexFuel kits come with fully-automatic, real-time ethanol content detection. The ethanol sensor measures the fuel you're using and adjusts the fuel injection accordingly, ensuring that you're running an optimal air-to-fuel ratio no matter what fuel you're using.
There's another downside with ECM tunes that bears mentioning: they may override ECM safety features and any driving condition-related adaptations. eFlexFuel 85 conversion kits, on the other hand, don't interfere with ECM functionalities. This means you and your vehicle are still protected by all OEM engine safety and driving condition-related features.
| eFlexFuel | Chip Tuning | E85 Tune | |
|---|---|---|---|
| Fuel | Flexible between E85 to Gasoline | Gasolinbe | Fixed ethanol content |
| Easy Adjustability | Different driving modes and custom fuel maps | No | No |
| ECM Safety Features | Unaltered | Unknown | Unknown |
| Datalogging | Yes, with eFlexApp and eFlexTuner | No | No |
Get Even More Engine Performance by Pairing eFlexFuel With a Modified Engine
If you've already had your engine modified and tuned for increased performance on gasoline, adding eFlexFuel and using high-octane E85 is the smart choice. Our E85 flex fuel conversion kits work with most tuned engines, so you're adding even more awesome power to your high-performance engine. If you're considering buying a kit for your tuned vehicle, contact our customer service team and let us know what mods you've made. We'll confirm compatibility and recommend the ideal product for you
Dyno results
Automotive
Peak power gains do not always tell the whole story! It's important to look at power gains across the entire RPM range / dyno curve, A.K.A. power "under the curve." Power gains under the curve will have a greater impact on driving experience. This is because gains under the curve impact the broader usable powerband, whereas peak power is momentary - only at one point in the RPM range.
If peak gains are 5% while max gains under the curve show 20%, this +20% increase is a better reflection of how your driving experience will change (you'll certainly feel that increase!). You want to feel the difference in the seat of your pants, and this is where power under the curve plays usually the biggest role.
Compare eFlexPlus & eFlexPro
 |  | |
|---|---|---|
| Features | ||
| VelvetTouch+ | ||
| Free 5-Year Warranty (with registration) | ||
| Ethanol Content real-time measured over 100 times per second | ||
| Shock-Proof & Weather Proof casing | ||
| Ethanol Tested & Approved fuel accessories (line, clamps, quick-connectors) | ||
| Bluetooth | ||
| Analog Wires for External Sensors | ||
| eFlexApp | ||
| Ethanol content | ||
| Vehicle speed | ||
| Engine RPM | ||
| Duty cycle | ||
| Fuel temperature | ||
| Ambient engine temperature | ||
| Injector activity | ||
| Cold enrichment | ||
| Device status | ||
| Driving mode selection * | ||
| Cold enrichment custom setting (created with eFlexTuner) * | ||
| Save RPM based enrichment with driving mode selection (created with eFlexTuner) * | 1 | 3 |
| eFlexPro view for analog data | ||
| eFlexTuner | ||
| RPM. based 2D fuel map * | ||
| Fault codes | ||
| Data logging | ||
| Log file analysis | ||
| Sensor linkage | ||
| Cold start adjustment | ||
| Virtual Load Sensor Tuning (eFlexPro 2) |
* Does not include in eFlexV10+ devices.
Disclaimers
* Your engine’s performance improvement will depend on several factors, but turbocharged and/or supercharged vehicles see the largest horsepower gains.
** eFlexPro and eFlexPlus are designed for racing and off-road use only.
