2010-2017 Tundra 4.6L V8 E85 Flex Fuel Conversion Kits

Boost Your Horsepower by up to 12% with Ethanol

In 2010, alongside the 4.0L V6, Toyota introduced the 4.6L V8 which produced 310 HP straight from the factory. This truck was popular with workers that needed a reliable and powerful truck to haul tools and materials to and from job sites, as well as the weekend warriors and simply fans of Toyota Trucks. Being a 4.6L, it manages to get decent gas mileage and is a real “can-do” kinda truck for the money. Those looking to give this laborers’ dream a little extra get-up-and-go are in luck because our E85 conversion kit for the 2010-2017 Tundra 4.6L can increase your horsepower 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


Our plug-and-play eFlexPlus and eFlexPro are so easy to install that they can be done in an afternoon and provide numerous benefits for you and your Tundra. Increase your horsepower by up to 12%, set driving profiles from your phone to manage performance and fuel economy, and eFlexPro comes with eFlexTuning software, allowing you to tune your 2010-2017 Tundra 4.6L V8 on a fuel 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 & ModelToyota Tundra
Engine4.6l / 1UR-FE
Power310 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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