As far as the tune you will want to run...
when you download the first time you will have the 'Mild' tune and the S1L or S1M trans tune. Refer to the H&S website for the different trans tunes available. The S1 tunes (S1L, S1M, S1H) all have the TCLockup in 4th as well as 5th gear...personal preference will prevail here after you get settled...go to 'show settings' to see whats in the tuner.
While the S2 tunes only have a 5th gear TCLockup...alot of local putting around sometimes makes the S1 4th gear TCLock annoying to some...while others love it...like I said ..it will come down to what you like in the end. Be sure to check your trans fluid level prior to doing your trans re-learn. Most of us expierence a rough 3rd to 4th gear shift for the first 100+mi after any re-learn/download...you may not.
The "HOTDAMMMMM" is Hot...and loose, very fast.....
and you have to mind yourself abit ....and you will get some black (delightful) smoke regardless of what you set your LBF (lower boost fueling) at....default is-3-. LBF can only be changed during install/download procedures.
The 'Mild' tune; that's the default; is quite powerful and fun...i run it on the 'Hot' setting...and i don't get into to much trouble (Riiiiggghhht
) ...i have my LBF set at -0- and i get almost no smoke..unless i womp on her. Right now i'm running the S2M trans tune, but my best mileage was in S1L with the 'Mild' tune at 'No power' , LBF -3-. Alot of folks love the S1L and state they get good mpg's....you'll see depending on your driving needs and the type of roads you travel on ...hills, flats, twisty turns....etc.
One note....when you do update/change tunes on the SD card ...do it on a PC that has a hard line to your internet provider (not a wireless) it goes faster and is complete.
You can change your 'Defuel' settings on the fly ....default is 1450*...you will hit it quick in the 'Hot" setting...it will beep before going into defuel mode ...which will stop as soon as your temps drop...
When you do change/update your SD card ..don't forget to update you 'Firmware' on your Mini Maxxxx prior to installing the tune on your truck.
Your in for a lot of fun