I just updated to the newest tune this morning and the truck is running much better. I think its 6.4.39. The injector "rattle" is gone and feels smoother. Also played with low boost a little. Had it on 2 and went for a drive and it was pretty Smokey, dropped it down to 0 and the difference was crazy. Just a haze off idle and then virtually clean unless I went wide open.
I think maybe updating your card could possibly fix the problem. Worth a shot anyway
sent from the sea