Wife drove truck to work today, no surprise there. But she goes up this hill on the interstate and she said before she had to put foot into it every time. Now, no problem at all climbing it. Pulling onto freeway is easier. She had a hard time keeping it below 70mph now. This truck wants to move now.
Anyone know what each octane tune will give if any difference?

 

With each increasing octane, comes a decreasing wallet

 

There is a series of dyno charts somewhere around here, from a member that got a tuner. He had some other mods as well though, but still, it will give you an idea of what to expect. As I recall, the difference from stock, to 87 tune was pretty good, but, going to the higher octane tunes really didn't get much.