been running on these plugs for a week after a tune and after a good pull it didnt want to idle very well what you guys think number 1 plug starting at the right and 4 end on the left

by the way they are ngk 8s and im dynoed at 348whp if that helps sig below

 

Def looks like its running too rich. The only other thing is that the plugs could be too cold, but one heat range really shouldnt matter like that. What do the AFR's look like?