Steve's home computer is down at the moment, so if you don't mind I'll field this question on his behalf.
Cold start is fully tunable on the Wolf, and as such if you have a Wolf put into your car and leave it overnight with Steve then he'll have no worries in making it start well in the morning.
There has been one other issue, that a few people including Rob77 experienced, where the cranking signal wasn't being picked up first time, which meant a few cranks before the car fired into life, Wolf have since released an update which makes it start first time. This was only apparent in a couple cars but Wolf quickly worked to fix the problem.
Any of the other good ECU's should be able to coldstart without any issues, just really depends on the tuner.