Sorry to bring an old thread back to life, but David did they ever figure out your problem?
I ask because I have a completely stock 2013 that has this exact issue. The dealer replaced one of the MAF a while back when the check engine light came on and insisted that would cure this issue, but of course it didn't.. I'm at a loss on how to get the dealer to figure this out. They are 2 and a half hours from me and I'm about 3000 miles from being out of warranty...
Anyway, I was hopeful your dealer figured it out with you or you know what I need to ask them to check at least.
Thanks in advance for any assistance!
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