I have a 2003 Dodge Ram now running an 8hp70 that I just completed the swap in. The trans has a stock SRT calibration and I haven't messed with any of the parameters but it is all over the place with it's shifts and really doesn't like to downshift. I cannot find any info if it is possible to do a quick learn using HP tuners so I can get the CVI set, it shifts perfect in manual mode but takes a dump once I move the shifter over to drive. Keep in mind this is an original truck transmission and I sent the TCM out to have the SRT calibration put in, there is no way the CVI can be right and I'm scared to drive it until I can do this.