Im getting a gryphon in the very near future and was just curious on what i should get. is there much of a difference in performance tunes with the different octanes 87,89,91, or 93?? I dont really tow too much nothing the canned tow tune would handle. Im mainly just looking for a daily tune that has power to get up and go when i need it to. I mean i dont personally see the need for 2 performance tunes, i'd rather just go with 1 89 performance unless the difference between 87-91 octane isnt really much at all. I dont see the need to have a 93 performance for daily use.