Hemi Continues to quit at Speed.

Tincup I was working at a Dodge dealer for the last 22 years. There's an issue with some of the Hemi engines where an interaction between sparkplugs and coils takes the pcm offline for a second and shuts it down. There was never a complete explanation from Chrysler on this but the diagnosis starts with making sure that you have a set of Oem plugs. I quess there's some counterfeit ones out there. Then try swapping out 1 coil at a time with a new to see if it is one of the coils the takes it out. If you find that the issue is not one of the coils then you replace the pcm. This seemed to usually happen on 06 to 08 engines. We would replace all the coils and plugs and then finally the pcm if needed.