I just took my 2007 T100 (stock, no AI) out for a short ride this morning. It was below freezing, 28 F. I could tell after two hits of the starter with full choke it was going to be a real hard start. Thinking about all the posts about how we have don't have a choke but an enrichener setup I pulled my side cover and covered 1/2 to 3/4 of the snorkel with my hand, hit the starter and it came to life and idled at 1400 RPMs. After 5-10 seconds I removed my hand and it kept on idling fine. Put the cover back on and suited up, (all of about 3 min). Pushed in the choke, hit the throttle and away I went. Only issue is that I now know that I NEED heated grips.