2008-2013 C6 Corvette LS3 E85 Gas Systems

Increase the Output of Your LS3 Vette Engine by Up To 12%

The standard engine in the fifth-generation Camaro SS and 2008-2013 C6 Corvette is the LS3 6.2L but it’s anything but standard, producing 430 HP and 425 lbs/ft torque. This small block 376 cubic inch engine is engineered to handle high-performance situations. Our flex fuel conversion kit will increase the performance output of your 6.2L Corvette engine by up to 12%.

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


With easy DIY installation instructions for the eFlexPlus and eFlexPro E85 conversion kits, you can convert your C6 Corvette or Camaro SS to ethanol in an afternoon. With the eFlexPro you can start custom tuning your C6 that, same afternoon. Just maje sure your fuel mixture is above E50. If you’re not tuning, this E85 conversion also allows you to run any mixture of ethanol and gasoline that you see fit.


DIY level

Plug&Play installation - An experienced mechanic will install in 1h-2h. For first time DIY installation, expect to double the time needed.

Technical specs

Make & ModelChevrolet Corvette
Engine6.2l / LS3
Power430 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.

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