Hello All, I've looked through historical threads and did not find one matching my issue. If I missed it please let me know where I can find. This is what I got:
1. 2012 F350 crew cab and chassis - 6.7 Auto - EGR/DPF delete with Bully Dog tuner (done before I bought)
2. Issue - When first starting out the truck shifts fine and at lower RPM, I'm not sure of exact RPM but probably 1800-2200. Once it cycles thru the first shift though it changes and wont shift until approx. 3000-3200 RPM. Turn the truck off and restart and it does the same thing... Normal shift pattern for first shift cycle then goes to high RPM shift.
3. I do not believe its a tranny issue because if i put it in manual it shifts perfectly
4. I have put in a new TPS - didn't help
5. OBD codes aren't revealing anything. However Service AdvancTrac is on and I'm working on rectifying that as well. But believe its an ABS Speed sensor so I have that under control ( I think lol)
6. I have ordered a ForScan system and will be running that on the truck later this week.
7. I just got the manual for the tuner and will be reading that in the next few days - but I am new to tuners
8. Brand new tranny fluid and FoMo filter installed as well.

Any thoughts or guidance would be much appreciated.