90 Octane Tune

[Unfairkickazz93]

Hey, I currently live in Fairbanks, Alaska and the MAX octane fuel available in all of Alaska is 90 octane. What parameters (how much) do I have to adjust?

Oh and the torque management reduction hasn't made it bad on ice and snow like you guys previously thought.

[mikel]

Use the 87 tune

[Unfairkickazz93]

That is what I have been using but, when it come summer I would like to have the best tune on there without paying someone to do a custom tune (just yet ). I have used the 90 octane with the 89tune but I was just wondering what parameters I can adjust on the 91 tune in order it to function well on the 90.

[mikel]

this is a 3.5?

if you have an 89 tune, there is little to nothing to gain trying to tune it for 90 octane

You may be able to add 1* of spark...

[Mike_Levy]

There not much to gain on the 3.5 at all. I have no idea how you guys saw any gains on it. I'm thinking this may be a 5.7 truck though. Not sure.

[Unfairkickazz93]

Oh, my bad. Yes, this is a 2012 5.7 Ram 1500

[mikel]

OK, so there is no 89 tune, you can either add some spark to the 87 tune, or pull some from the 91 tune, and monitor KR.

[Unfairkickazz93]

Huh, I could have sworn there was an 89 setting that I put it on. Oh well, how much timing do you think I will need to pull from the 91 tune?