Here's a video of what I found causing these codes and symptoms:
Suspect that while driving boost inside the intake is so strong it popped the piece out. At low idle speeds the vacuum built up and was able to suck it back in masking the problem. I got lucky during my test drive that when it blew out it got stuck on the lip causing a massive vacuum leak. Since intake needed to be replaced anyways went ahead and recommended carbon cleaning and spark plugs at the same time. Here's before and afters of my walnut shell cleaning.
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Originally Posted by The Infiltrator
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