How To Convert Your Coyote Mustang To E-85 (11-14)

Posted 11/7/2017 by Trey Pridemore

LMR explains the benefits, power gains, and procedure of switching to E-85 on your 2011-2018 Mustang. Converting your coyote to E-85 can help improve power!

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  • How To Convert Your Coyote Mustang To E-85

Converting over to E-85 is becoming a very popular option among 11-17 mustang GT owners. E-85 is a very economical way to increase horsepower without a lot of modification. Converting over to E-85 is very simple and requires very little fuel system change depending on your mustang.

What Is E-85 & What Benefits Does It Have

E-85 is a ethanol based fuel that contains 51%-83% ethanol and is readily available at many local gas stations around the country. The main benefit to E-85 is its increased octane rating. The octane of E-85 will vary depending on the actual ethanol content of the fuel. However, most E-85 will carry an octane rating of 100+. This means that you can run more timing and more boost, which means more horsepower. E-85 is usually found at a cheaper cost than standard premium fuel. The combination of availability and cost of E-85 makes it a great option when looking to get more power out of your mustang. However, this fuel does come with it’s own drawbacks. E-85 burns much faster than regular premium gasoline and will require 30% more fuel over standard premium fuel.


How To Convert Your Coyote Mustang To E-85 - How To Convert Your Coyote Mustang To E-85

Converting 2011-2014 Mustang To E-85

When converting your 11-14 Coyote mustang over to E-85, you will need to do a few fuel system modifications for everything to run properly. You will be required to run a minimum of a 47lb fuel injector depending on your modifications. You will also be required to have a custom tune to support the E-85 and it’s needed fuel delivery. The factory fuel lines and fuel pump will support E-85 in a naturally aspirated application without issue.

How To Convert Your Coyote Mustang To E-85 - How To Convert Your Coyote Mustang To E-85

Converting 2015-2017 Mustang To E-85

When converting your 15-17 Coyote over to E-85, it does not require as many modifications depending on the vehicle. 15-17 owners can run E-85 on the factory fuel injectors as long as they are running the factory intake manifold. You will still be required to have a custom tune to calibrate the PCM for the needed fuel. However, if you own a 15-17 mustang GT with an upgraded intake manifold, you will require a minimum of a 47lb injector. The factory injectors will not be able to withstand the fueling needs from the increased air flow of the upgraded intake manifold.

How To Convert Your Coyote Mustang To E-85 - How To Convert Your Coyote Mustang To E-85

Converting Coyote To E-85

  • 2011-2014 Mustang 5.0 - 47lb Injectors & Custom Tune
  • 2015-2017 Mustang 5.0 (Factory Intake Manifold) - Custom Tune
  • 2015-2017 Mustang 5.0 (Aftermarket Intake Manifold) - 47lb Injectors & Custom Tune

E-85 is a great option for those looking to get more horsepower out of their mustang. The growing availability of E-85 makes it a solid option when considering your next modification.