That’s all I was trying to say he added a little race gas additive to the 91 so I would have a good tune even if the gas was I little stale and it ran good with a little over 700 and with 93 it never ran any stronger on the dyno. But Joe never changed the tune
There is a difference.
My 91 tune was finished and then we compared to the 93 tune.
The additive never factored in my 91 tune, and that is the tune I am running.
The straight 91.
The 93 was only an experiment after the fact to compare what the difference would be.
In your case, it sounds like the additive played a part in the result of your final tune.