the tune is based on a completely stock Jeep. That was made clear when the thing came out. So your mods MAY or MAY NOT improve anything.
my GUESS would be there are too many variables for them to consider supporting so they just support none.
the bad part is we cant get anyone else in there either unless some superchips programmer is out selling custom tunes
thats why with the hemi having other options that load custom tunes are prolly the best.
the rest of us really have limited options.