custom tunes for my gryphon

[cody994x4]

hello all, finally i will be ordering my gryphon sometime this week. i have a few simple questions before i order. i plan on using the gryphon all stock/canned until i get my custom tunes...i will just play around w how to use the programmer and go through menus/options but not change anything, i just want to familiarize myself w the interface and get used to it.

as far as my tunes im gonna go with 87perf and 91/93 perf.
im not sure if i will need a custom tow tune, i tow rarely and when i do its no more than 3k lbs, usually just a pop-up camper, the hardest pulling i do is through colorado mountains but that is once a yr to go hunting, do i need a custom tune for this?

when i get my level one and three tunes, will my tire size/new gear ratio be dialed in? will i have to manually enter anything?

also, when i order i wont have my hex code right? ill get that once i receive my gryphon?

looking forward to this as ive wanted one forever.