2006-2010 Dodge Charger RT Flex-Fuel Conversion Kit

Convert Your 5.7L Charger HEMI to E85 and Increase your HP by Up To 12%

The Charger RT with the 5.7L HEMI V8 has a 5-speed automatic transmission standard. It also had a multiple-displacement system that was designed to save fuel by running on only four cylinders when cruising. That was a nice feature in the V8 and saved you a bit of money. When it came to horsepower the 5.7L HEMI had its fair share but for those who want more, an E85 conversion kit is the best answer.

No tuning required!

$699 List price $874

Starting at $61.50 / month with Affirm logo

Truspilot consumer rating 4.7 SKU: U-EF-PLUS
  • Free shipping
  • Delivery time 2-5 days
  • 5 year warranty with registration


Our plug n’ play E85 flex fuel conversion kits, eFlexPlus, and eFlexPro can be installed in an afternoon and you start running any mixture of E85 that you see fit for your Charger RT. Ethanol can increase your HP by up to 12% and with the eFlexPro, you can create your own tunes with a mixture of E50 or higher.


DIY level

Plug&Play installation with some modifications - An experienced mechanic will install in 2-3h. For first time DIY installation, expect to double the time needed.

Technical specs

Make & ModelDodge Charger
Engine5.7l / H / EZB / HEMI
Power340 hp
Fully Automatic Flex FuelAlways Optimized Fully Automatic Flex Fuel
Cooler & Cleaner EngineCooler & Cleaner Engine
No Tuning NeededComplete System, No Tuning Needed
Increase PerformanceUp to 20% Increase in Performance
Flex Fuel System VerifiedYour 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

+ eFlexApp

+ eFlexTuner

+ Installation

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.

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