Hold the phone on that fix, Don ! The truck started up fine two times, and then went to acting crazy again. I want to evaluate it a little longer to eliminate everythiing else. I want to try some more "true cold starts" because Im not sure the glow plug circuit is even working and Iwant to make sure ...

I am having the exact same issues, same calid ,same revision . truck ran great before, did not have a programmer before the 9r10 update so I can only compare to stock.

I have a 2003 6.0 CC DRW FX4 and recently updated to the 9r10 in my U7165. I am having a rough cold start no matter what hp tune I install, return to stock , starts like a dream. My calid is VXAP2N2. Im looking more for fuel mileage, the heaviest thing I tow is a 6000 lb boat. thanks for any help..