As much as I love the MPC era stuff. The smoke output isn't the best. I have had a few that did smoke decent but that wasn't the rule. I find it even more annoying on certain models because they did the steam chest smoke also. Why have more places for smoke to not come out of? HAHA.
Now you haven't seen a locomotive smoke until you get a Marx steamer going. Those will smoke you out of the house and maybe even the neighborhood.