Are Different Octane Gas Levels Needed for Different Tunes on Flashpaq Tuner for 2003 Ford F-150

Question:

Do you have to run 91 octane gas with the programmer? If so is that on all the tunes or just some?

asked by: Evan

Helpful Expert Reply:

The Superchips Flashpaq # SU1845 does have different fuel requirements for different tunes. Some of the tunes actually have the octane level in their names:

87 Performance requires 87 octane
91 Performance requires 91 octane
93 Performance requires 93 octane
87 Octane allows the use of 87 octane regardless of manufacturer's recommendation
Heavy Load Tow and Towing tunes use 91 octane
Mileage XS requires 87 octane

expert reply by: Michael H

Raymundo D.

4/30/2020

What happens if you run the 87 tune but have a full tank of 91

Chris R.

5/2/2020

The lower octane fuel likely won't allow the more aggressive tune to perform how it should. You won't get the kind of results you're looking for and the gas mileage could suffer as well.