Excessive smoke
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Smokes more than my 06 5.9 with 100hp added. Smokes when I ease in to accelerator really puffs when i get down on it. You can see a small amount of smoke just ideling thru the neighborhood. Acts like it is either getting to much fuel or not enough air. I don't know to much about the EGR on the 6.7. I thought this may could be the problem.
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From what I have read, you need to make sure you are doing the key cycle (10 or 15 seconds .. something like that) at least every couple hundred miles. I have also heard that the EGR valves can get stuck open and cause the truck to smoke really heavy. Doesn't seem likely on a 2010 truck but who knows. Another thing I read was that sometimes the black box that plugs into the OBD2 port can sometimes have problems and doesn't reset a regen counter and can cause the truck to go into regen ... might be that. Personally I would just give their tech department a call. I read some reviews on their site and they seem to be able to work out many of the problem people encounter.
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From what I experienced on my 08 its the EGR. I did the delete w/Smarty and kept the EGR and it would roll random coal here and there on a small setting like SW3. I ditched the EGR and no more random coal. It would roll on the highway, no load 65mph on a 8 hr trip, just here and there all of suddon.