According to my current measurements at the ingition coils, the current is very marginal. (Probably because of the crappy PCM)
The bigger the gap at the plug the, higher the spark voltage has to be to make a spark.
The Bosch plugs need a much higher voltage and the gaps cannot ("need not") be adjusted.
So stick with the old type plugs and adjust the gaps a little smaller.
Since this is a direct emission type defect it should be reported to the NHTS board and a total recall of all PCM's should be instigated.
If yours is under 90,000 miles have it replaced immediately for free, by fed law.