First I want to start out by saying I love my Smarty I got on Aug. 12. I programmed the truck today and put it on program 3. Awesome power and throttle response to say the least. But I read in a different post that the 48re will not handle anything above setting 1. Could you please help with this issue because I am very concerned about the life of my transmission. I don't tow heavy loads and I don't try to go out of my way and race anybody (well maybe sometimes) but not often at all. AM I to believe that I should upgrade my TC or just take it easy?I thought it said in the paperwork that came with the Smarty said Smarty alone will not harm our trucks. I am very happy with my Smarty with the brief time that I have owned it, but I am a little concerned with that post saying not to use above number 1. I hope I don't sound like a winer!