My PCM is UKN0 and it is in an F350 Dually with 4WD. I read that the pcm is for an excursion. Would this be an issue with performance in the truck with it stock? I have the TS performance tuner but stopped the install when I came across this issue. The tuner says it's for my year and engine but im unsure about the pcm. Should I change the pcm to match the truck? I've contacted the TS Performance to check and awaiting response on the chips compatibility with the pcm. Any suggestions from y'all will be much appreciated.

 

California model 00?

If so, you're fine.