Programmer and Tow mode

[Horsestrokin]

I was wondering a couple things about programs and tunes

1) How can I tell if some installed a program on this truck and left it when they traded it off (truck and transmission seem very proactive when I lock it in tow mode, it down shifts on exit ramps about when I'v only slowed, and havent touched the brake yet, and when taking off, it stays in gear till you get to about 2600 rpm, then might shift up by then)

2) And when one uses a "tow or Street" tune from a SCT X3, how does the tunes behave when one uses tow mode switch/control? Do or will they work in concert, or will you have a cat fight on your hands?