This is getting pretty annoying. On cold start up, especially on a chilly or wet day. The car with fire up and if gas isn't applied immediately the car will idle rough for a second then choke itself and stall. If I stab the gas a few times and clear it's throat it is fine though. I've also noticed the car will exhaust vapor even on mildly chilly days, not just the typical ice cold days.
It was never an issue until I replaced the air cleaner with a fram.