Cold start stalling

[Grumpy Goat]

OK, went out to the garage this morning and with everything (IAT sensor & intake air) at the same temp, one press of the starter and it fired right up and high idled just as it should. I'm going to have to repeat this a couple more times to verify. But you really only get one "cold" start a day, and having to clear my 65 degree garage of ex fumes with 30 degree air...  I'll report back after a couple of days and test starts. I'm really thinking this has to do with the IAT sensor being warm and the actual intake air being 20-30 degrees cooler resulting in improper fueling.

Good result so far. Yes, please do let us know how the repeat tests go.

But now have to ask - how cold is the outside air when you wheel the mike out of the warm garage and leave it in the cold for 20 minutes before starting?

A good control would be to let the bike not be in a heated environment (i.e. let it be cold) and then start it. Rather than leave the bike out longer than you usually do, you could turn off the heat in the garage so that it gets as cold as it would, and then push the bike outside and let it sit for the 20 minutes before starting. I'd want to know what the results are then. With that information I think we could properly infer a conclusion.