I wouldn't tune it to temperature. That being said it should be over 200 and under 270 or so but go by smoke and performance instead.

I started to break my GST in yesterday and used the old motors settings with the very lean lsn settings (wish I knew there were two sets of settings). It was run like that for about 10 minutes and was revved above idle and hopefully out of the lsn range but it has me a bit concerned. It still has all the initial pinch, though. I did richen up the lsn a bit because it seemed to need it.