While I can't offer any specifics about the settings of the canned 91 Octane Tune, I can say that it makes a difference in how the car runs and drives. I didn't modify a bunch of settings; I just turned off MDS and reset the TCM Adaptation when I installed the tune - car runs great!
Just follow the instructions and let the inTune update itself while connected to your computer before plugging into your car.
I got it all installed! runs great !!!