Boys, I'm excited! I just installed my brand new U7193 on my Chevy 2500HD. I installed the 87 tune and the truck was shifting hard on the test drive. So I went back to the house and changed the tire size on the Predator to the tires on my truck. This seemed to fix the problem.
I had just gotten up to speed on the highway and was getting ready to see what she has now, when I spotted a state trooper in my rearview.

I took this as a sign and headed back to the house before I did something foolish.
I'm looking forward to seeing what the Predator has done to my power and MPG.
Thanks for all y'alls help in the forums.