Let me just start by saying again that I know my truck very well. I can feel a gain in power or a loss in power just about every time I change something. I've tested a ton of different things for this site and myself. First BD, then SC, then a BDGT and now, Uprev. By far this is the most powerful one of them all. Jared had to get my tune really close on this base map. Normal driving feels just like stock except the throttle feels a little bit more responsive (not much) and the shifts feel a little quicker ( just a tad). Let me tell you this, and when you and if you ever get Uprev you will tell me I wasn't lying. When you open it up and go WOT it's un-real the difference in power. It pulls hard as hell all the way to the shift now. There is absolutely no lull in the power band. I did a couple 20-60 pulls and I'm telling you, I can feel the difference. I was nervous about going WOT thinking that what if I spent this money and I can't feel the power. After doing the first 20-60 my jaw dropped and called a buddy and had to tell him. I'm sure the power I'm feeling is from the 5-10 hp through the entire rpm band and that my AFR is most likely in the mid to high 12's even with the base tune. O.K enough blabbering. I'll be doing some data logs later and I'll post again on second impressions I'll try and post up a log or two also.