Ghost cam is pretty cool. I have it, don't run it often, as I don't wanna go down the same road on the Mustang as past cars, so the cats will remain on it. Only issue I have is occasional stalling, and I kinda wonder if that has anything to do with still having cats on it. usually it's on a warm start, before it's switched over to the overlapping mode.
Oddly enough I ran the cam tune for the last week, and I had no issues at all when I was in Boston and on the way home. Fill it up with local D.C. gas, and it stalled twice in the last two days. I'm almost wondering if there is anything about the specific blend of gas here that is the root cause.