Thanks Andrew. Right away might be optimistic.... I procrastinated a couple of months on figuring out the lumpy idle. The SES light finally made me check the error codes and then I rummaged about on the internet for a few hours trying to understand the error messages as well as the role of the CCV and all the vacuum lines. Thought for some time about where to connect the smoke generator and finding the hoses for the smoker. The cold temps in my garage kept me from pressing on under the hood right away.

After finding the issue I was too excited and forgot to connect the TLDM vent hose back to the manifold.........resulting in an idle that really was pathetic. Fortunately, it only required taking the beauty cover off to stick the hose back on. Took me the better part of an afternoon to get this squared away.

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2003 4.4i black ext./black int./black headliner (kid's runabout)
2014 535d X-drive, M package, silver/black interior

Sold but not forgotten:
2009 E70 35d, black ext./black int./black headliner (sold 2021)
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD in 2012 sadly...

Other hardware:
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler
2005 Tundra crew cab, weekend hauler. Sold after 150k very happy miles.