How many miles do you have on the truck since the swap? Is it still low on power?
It should only haze at idle for the first few miles/heat cycle. If you have a haze at warm idle and you have ten miles or so on it I am gonna bet you have a injector that isn't seated all the way.
Thats what it sounds like to me...
The thick white smoke he was talking about...He lives in FL....its not THAT cold down there where he'd be having steam like we do up north. I get thick white exhaust but its all steam, like when you exhale.