I found that out. At one point, I was about 1/4 on the intake and half on the exhaust and was humming along in the 275 range. If I can get Imgur to cooperate, I'll be posting a few pics.
I had a couple of issues with temp at the beginning of the cook...maybe I shouldn't have done what I did. I seasoned the cooker for 3 hours at 350 with no water in the pan. Right at the 3 hour mark, I threw on a rack of STL ribs. Because the pan was scalding hot, I decided not to add water to the pan. I got the temp to drop easily enough, but had issues for the first hour or so of the cook, trying to keep it under 290. (My Smoke was set for a low of 260 and a high of 290.)
After that first hour, I think I had it pretty well figured out and was able to maintain 270-285 for another 3.5 hours without doing much more than adding a split.
I had two bags of store bought kiln dried wood (the mini logs) that I decided to use up for today's event. I know that that stuff burns up faster and, since the first 3 hours was 325-350 seasoning and the entire 7.5 hours was with no water, I was surprised to find that I only used 15 of those splits. I started the fire with a full chimney of lit KBB...and only added 12 splits over the next 7.5 hours. Does that sound about right?