Update here, pretty simple just not at 11 pm. Removed tuner, last night, same result. Pipe and release form purchased from Cobb Diesel so contacted them this morning and found out a common problem due to the sensor connections not being 100% solid. Puts truck in limp home or no run condition. You must re seat all sensor connections then use a jumper wire across terminals at starter to crank it and start, at this point it will be in limp home mode, then reset factory settings again to clear that, then reinstall tuner. Now runs great, EG temps down, fuel mileage at 21 and climbing so far. Thank you again DaveBen