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2005-2010 Charger SRT8 6.1L HEMI E85 Conversion Kits

Flex Fuel Can Increase the HP of Your SRT8 By Up To 12%

The Charger SRT8 was focused on performance and equipped with a 6.1L HEMI engine. Coupled with a 5-speed automatic, as well as many other comforts and amenities from upgraded seats, climate control, a more stylish grille, rear spoiler, and much more. The factory-tuned horsepower of the SRT8 was also quite the upgrade from the RT but not maxed out. With our flex fuel kit, you can expect up to 12% more horsepower after a couple of hours of installing.

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 conversion kits, eFlexPlus and eFlexPro are easy to install and you can start running any mixture of E85 that you see fit for your SRT8. And with the eFlexPro, you can start tuning your Charger 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
Engine6.1l / W / ESF / 370 cid Hemi
Power425 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

+ Returns

+ Warranty

What's included in the eFlexPro E85 flex fuel conversion kit / 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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Warning signNot legal for sale or use on pollution-controlled vehicles

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