Cold start advance

[vwmike]

I was noticing how there appears to be no cold start advance on some pumps (like Peugeots). How do those cars attain an even idle speed with no cold start advance?

[jtanguay]

Some engines come with an automatic cold start advance  such as some Nissan diesels.  Not sure about Peugeot though.

I believe the engineers used coolant temp to control cold start advance that would be great on our VW's