just got truck out of the shop today, put studs,new headgaskets, oil cooler, egr delete,injector 0 rings,whole top end gasket set,cleaned turbo and cold air. put it on the performance sct livewire ts tune and think my trans is starting to go now, more like a bucking-jerking when got her to the boards. thought it could be the egr or plugged filter or bad orings or injectors but everything is new on engine so im leaning more twords trans.. truck is at about 450-470 hp. anybody have the same jerking or bucking?? let me know what you guys think,thanks!!

03 f250 6.0 155k miles
fuel press rite at 50psi also

 

fuel pressure should be more around 60 to 65psi, you got the BLUE SPRING upgrade? after a rebuild like that you really shouldn't be tuning it up or jumping on it for about 500 miles or so. You have to let the gaskets seat and let everything normalise for several heat cycles if you want to have it last for a while. Even though the SCT might have trans tuning you will have to let the tans relearn the pressures for normal driving, it can take a while, maybe 100 miles or so for this to happen, anytime the batteries are disconnected this will happen. It will be searching for gears, revving higher befoe shifts, bucking, till it relearns.