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What is an E85 Conversion Kit?

An E85 conversion kit is a device that enables vehicles to run E85, a blend of 85% ethanol and 15% gasoline. The kit included sensors and a piggyback tuning device to adjust the engine’s fuel delivery system to accommodate the different properties of ethanol, giving the option to choose which fuel to use. This conversion kit allows vehicles designed for traditional gasoline to have the option to take advantage of the benefits of E85. E85 fuel offers many benefits such as improved engine performance, lower emissions, and lower engine running temps.


Performance Benefits of Switching to E85

By using an E85 conversion kit, one can take advantage of its many benefits. The fuel blend of 85% ethanol and 15% gasoline allows the fuel to achieve a higher octane giving you better performance. The increased octane will allow for higher compression ratios if desired, resulting in improved efficiency and performance. Additionally, it has a cooling effect on the combustion process drastically reducing the risk of engine knock and heat soak.


Radium Parts: The Clear Choice for E85 Conversion Kits

Radium Parts is a company founded and grounded in quality performance parts. That is why we are the clear choice for E85 flex fuel conversion kits. Our Flex Fuel Kit offers industry-leading technology that provides real-time (about 30 milliseconds) ethanol content levels. This product has been rigorously dyno-tested to ensure proper readings and adjustments from the fuel management system. This Flex Fuel Kit is compatible with bolt-ons, it doesn’t require a tune, and it will instantly adapt to any new tunes added. We also offer a prop option for vehicles with upgraded power adders or larger injectors.


Benefits of E85 Flex Fuel Kit

An E85 flex fuel conversion kit offers several performance, longevity, and environmental advantages for vehicle owners seeking a more versatile fueling option. This kit allows vehicles to run on E85 as well as traditional gasoline. Besides the performance benefits mentioned above, one key benefit is increased environmental sustainability, ethanol is a renewable fuel source that produces fewer greenhouse gas emissions compared to pure gasoline. Additionally, E85 typically comes at a lower cost per gallon, leading to some savings at the pump for the user. The conversion kit lowers engine running temps as well as protecting your engine from rod knock. Overall, an r85 flex fuel kit will not only boost performance, but it will also prolong the engine life all while saving you money.


How Does an E85 Flex Fuel Kit Work?

An E85 flex fuel conversion kit enables vehicles to run a blend of up to 85% ethanol and gasoline. The kit includes a sensor that measures ethanol content in the fuel, allowing the engine control module to adjust parameters like fuel injection and ignition timing accordingly. This adaptive system ensures optimal performance regardless of the ethanol-gasoline mixture. This conversion kit provides flexibility for drivers to use E85 or traditional gasoline, contributing added performance and increased engine protection.



1. What is a flex-fuel system?

A Flex fuel system allows vehicles to run a blend of gasoline and ethanol, typically up to 85% ethanol (E85). These systems include specialized sensors and engine components capable of adjusting fuel injection and ignition timing to accommodate varying ethanol concentrations, offering flexibility in fuel choice

2. How does a flex-fuel system work?

A flex-fuel system enables vehicles to run on a varying blend of gasoline and ethanol. It employs a sensor to detect the fuel mixture and adjusts engine settings accordingly. Components such as fuel injection and engine timing are optimized for the specific blend, offering flexibility and potentially reduced environmental impact.

3. Is flex-fuel the same as diesel?

No, flex-fuel and diesel are not the same. Flex-fuel vehicles can run on blends of ethanol and gasoline, offering flexibility in fuel choice. Diesel vehicles, on the other hand, use diesel fuel, which is a different type of fuel derived from petroleum. They have distinct engine technologies and fuel requirements.

4. Are engines that use flex-fuel good?

Engines designed for flex-fuel offer versatility by running on a blend of gasoline and ethanol. While promoting fuel diversity and potentially reducing greenhouse gas emissions, their efficiency may vary depending on the fuel blend. Lower maintenance cost and fuel availability are also factors to consider for optimal performance and savings.

5. What is an E85 flex fuel kit?

An E85 flex-fuel kit is a conversion system for vehicles, allowing them to run E85 ethanol fuel, which is 85% ethanol and 15% gasoline. The Kit includes sensors, fuel lines, and a computer module to adjust engine parameters enabling compatibility with both traditional gasoline and ethanol blends.

6. Can I put E85 in my flex fuel car?

Yes, flex-fuel cars are designed to run on E85, a blend of ethanol and gasoline containing up to 80% ethanol. Using E85 in a flex-fuel vehicle is acceptable and often recommended for optimal performance, as these vehicles are equipped to handle various ethanol-gasoline blends.

7. Is E85 flex fuel worth it?

E85 flex-fuel can offer cost savings and reduced emissions, but it depends on factors like vehicle compatibility, fuel availability, and local pricing. It’s generally cheaper than regular gasoline, and it can help prolong the life of your engine by its cooling characteristics.

8. Does E85 make my car faster?

Switching to E85 fuel can potentially increase horsepower due to its higher octane rating and cooler combustion, allowing for more aggressive timing and tuning. However, its lower energy density compared to gasoline might offset some of its advantages, and in extreme cases modifications may be needed for optimal performance. Results vary depending on the vehicle’s setup and tuning.