Hey guys I had tried to find someone on here who had used the Pro Comp performance programmer and couldn't. It is made by hypertech so I figured it wouldn't be much different, but I figure I'd go ahead and try the Pro Comp and tell you about it. I like it a decent bit. A little more power not sure on gas yet. I can raise the top speed limiter to 128mph (not that i'll ever have it there). You can raise the rev limiter up to 500 rpm, but as I found out on here that doesn't really do much since the shift points aren't electronically controlled. One feature I definitely like is the way to adjust my speedometer/odometer. You can put in the size of your tires, but not your gear ratio which I was hoping for, and it will correct your speedometer. I have a 4:56 rear end opposed to the stock onein dodgesand since I can't put that into the computer just putting the size of my tires in isn't enough. I have 35 inch tires and when I put that in the programmer I went from being 7 underat 70mphto 4 over at 70 mphso I then put in 33 inch tires and that seems to have done the trick after driving up and down the interstate past the construction radar quite a few times lol. I got ordered my programmer off 4-wheel parts and right now you receive free next day shipping and a free $25 dollar gift card which I thought was a nice extra incentive. I paid 360 bucks for it so yeah thats a little pricy, but all in all in the long run I think it will be nice to have the extra power on top of a correct speedometer. I'll try to keep checking this and if you all have questions ask away.