[Unleashedford]

so i got my gryphon today and i filled up my truck 91 octane, the canned tunes come 87 tranny, 87 tow, and 93. people say the 87 is just like the 89..

so my question is can i run with 91 octane with the 93 option? they dont sell 93 octane where i live...please let me know thanks