with cold start connected the car started instantly put then just died. and it took a while before it started again and would run like a pig and wanted to stal.
with the cold start valve disconnected i had to start a little longer but idles perfect at about 1200 rpm and then after a while it idles at 950 rpm after it warmed up a little.
I'm just leaving it disconnected as it doesn't bother me

Edit: warm startup is perfect at the flick of the key it instantly starts and revs are at 950 rpm and idles very smooth, so yeah they do start good when warm
If it's properly setup that is.