I did this last year but i have a new setup and tune and i forget how to fix cold start problems. It was 100 out side during my tune now it doen't like to start at 40.

 

I've found that most issues are due to inadequate fueling in the warmup enrichment table. Increase your fuel % values below 80 degrees by 5-10% and see if that clears up the problem. You can get to this table by simply hitting the template button that says "Start".

If that doesn't work let us know and I'll give you some more parameters to check out.

Remember to check out your air temp fueling and timing compensation maps to see if they're set up properly as well. This isn't necessarily related to cold starts, but driving in cold weather in general.

-Mike