[PanJet]

Air in the fuel line? I really hope not but a gulp of water from the intake/intercooler? Water getting past separator?

Not exactly the same as you, but I've noticed when cold starting recently I'll have it miss 1-3 times idling at 1000rpms but goes away right away after that.

Add me to the list of having this. It only happens for while idling during the first 10-20 seconds after a really cold start. It'll miss once or twice, and that's it. I've written it off to, "That's just how it is" as it hasn't caused any problems whatsoever.