I know on my 24v it has a heater that heats the incoming air from the innercooler. i thought 12vs had them also but i havnt been under the hood of one on a while. i can actually watch mine pull the volt meter down, and i can here my lift pump pull harder when it cycles in and out.
By skip do you mean like sputtering? I don't notice any, unless it's around 500RPM, just before it dies if I don't give it some gas. I don't get any white smoke either on startup. I guess as far as being warmed up, I'm refferring to a little heat in the cylinders, because if I keep the gas on, it'll hold it's idle on it's own, before the water temp gets up. It just takes a while.