Since I got the mail order tune at the same time as the 6.0, I dont know whether it is the motor or the tune causing this, and I have ruled out the tranny because I blew the old tranny just after the swap and it was doing the same thing. Any ways it seems like my tranny is shifting way too much. If im starting off with little acceleration, it will shift through 3 gears before I hit 20mph, and then if I want to accelerate a little more, it now has to down shift 1 or 2 gears to get going depending on how hard I mash the peddle. It just seems like it is shifting way too much, I just wish the damn thing wouldnt come out of first so fast and easy from a stand still during normal acceleration.

 

Raise your Part Throttle Shift Speed vs. TPS by 5% at a time until you get a feel you like

 

Thanks Yelo, I guess I will call Jesse tomorrow at wait4me and see what he has to say. I also noticed my tach seems to be reading higher vs. the speed I am going than it used to and if I go wot through a shift, it seems like the tach hangs way past 6k for a long enough time to make me nervous before the shift at wot.

 

It's got the wrong setting in the tune for the rear-end then...the truck thinks it's going faster than it is, THAT will definitely cause the early shifting problem too