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2005-2007 C6 Corvette LS2 E85 Flex-Fuel Conversion Kit

E85 Gas Conversion Kits Can Increase the LS2’s HP by 12%

The 2005 – 2007 C6 Corvette has a powerful 6.0L engine that GM reserved for their high-performance sports cars starting in 2005. These high-performance cars also included the Chevrolet SSR and the Pontiac GTO. Our E85 gas conversion kit is a custom fit for the LS2 6.0 engine used in the 2005 – 2007 Corvette, SSR, and GTO.

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


The eFlexPlus and the eFlexPro are easy to install, plug n’ play modules that convert fuel injected engines to E85 fuel. With this conversion, your C6 Corvette LS2 will now be able to use any mixture of E85 fuel and regular gasoline from full E85 to full gasoline without the need of any additional tuning or changes to your Corvette’s engine.


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 & ModelChevrolet Corvette
Engine6.0l / LS2 / U
Power398 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.

Prop 65 Warning
Warning signNot legal for sale or use on pollution-controlled vehicles

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