Found a topic this morning in the 6.4 performance parts section that discussed this same thing. I had saw this same issue on my truck, but never thought it would be a learning curve. Here was the quote:
Originally Posted by Serial Fordicator
I got these quick reference tranny relearns from Jeff Dodd. I am in no way claiming to be the one that thought this up, but it has worked for me and alot of other people on the forum. I figured I'd post this to make it easy and perhaps a sticky for easy reference.
As far as the tranny revving then slamming into gear, Jeff also has posted to add 1/2 quart of tranny fluid, but before you do, crawl under and make sure no tranny leaks.
1. From a stop, accelerate the vehicle to 60 mph at approximately 1/2 throttle. DO THIS three times
2. From a stop, accelerate the vehicle to 60 mph at wide open throttle. DO THIS three times
1. From a stop, accelerate the vehicle to 55-60 mph at approximately 1/4 throttle. DO THIS TWICE
2. From a stop, accelerate the vehicle to 65-70 mph at approximately 1/2 throttle. DO THIS TWICE
3. From a stop, accelerate the vehicle to 70 mph at approximately 3/4 throttle. DO THIS TWICE
4. From a 40 mph roll, press the accelerator to the floorboard quickly (forcing the truck to downshift) and accelerate to around 75 mph.
5. From a stop, acclerate to 75 mph at wide open throttle (press the accelator to the floor immediately). DO THIS 2-3 TIMES
Thanks for the help Jeff, just trying to make it easier for everyone to find.
Also found this that Jeff from Spartan responded
"Load the tune. Once complete, take the truck for a drive. Drive through the gears easy a few times, stop sign to stop sign type driving (I live in a big neighborhood). I get out of the neighborhood, and make a 30 minute loop through the city/county I live in. We have a major U.S. highway and a major U.S. interstate running through here, so I have plenty of road to choose from. When I get to a red light or a stop sign, I run the truck at 1/2-3/4 throttle through the gears once I start going again. I do this as much as possible. The more 3/4 throttle pulls through the gears, the better. If you do enough, there really is no need for any full throttle pulls. I then get out on the interstate, going through the gears pretty hard up the on ramp. Before I merge on the interstate, I slow down to about 50-55 MPH and roll into the throttle hard. This allows for a good solid downshift and then a final shift in to OD with the converter locked. I try to imitate several different transmission shift patterns that I experience or use on a daily basis. I try to imitate them more than once.....actually as much as I can. The more you do, the better. After about 30 minutes, I am back in the neighborhood going through the stop signs again, easing through the gears. Everything shifts great from there.
It's ideal to do a relearn pretty often. After a few weeks on a tune (if you don't change very often), the shifts can get sloppy. To combat this, all you need to do is a quick relearn. No need in reloading the tune."