5 hours into the smoke. I started with 4 hours @ 140, then bumped it up to 175 for an hour, and just upped the temp to 200. I've had hickory smoke the whole time, so now I'm ready for it to get to 155! Currently at 130. 18-degrees when I started this morning, and 27 outside now. The #1 seems to be performing well, despite the cold!