I tried it at the track one weekend and was running consistent 13.01's with the BD/tst stack. I then tried a friends Smarty/TST stack and the first run I ran a 12.88 and then I was sold on it. When I was running at the track I also saw a 200 deg egt drop between the two programmers.
I tried a smarty before and drove around and could not believe how much smoother and driveable the truck was on the highest setting compared to CL I was running.

 

thanks guys I think that pretty much tells me everything I need to know. Go buy a Smarty and a TST