Just a quick update - picked the car up from the dealer yesterday. This might be coincidental with the weather having warmed up in the past few days (in NJ) but the dealer stated they did not hear or observe any of the hesitating or stumbling on cold starts in two days. They did run some tests and checked the engine bay to find a loosely fitting intake hose. As a result, the SA indicated that the technicians tightened/re-adjusted all intake housing/fittments and didn't hear anything again on cold restart.

Just to verify - I did let the car sit cold for roughly 8 hours in my driveway and restarted it - so far so good. Maybe that did the trick (crossing fingers anyway).

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Cheers,
Tae
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2012 BMW 750i XDrive Sedan (Current)
2008 BMW X5 3.0si (Current)
2011 BMW 328xi Sedan (Past)
2008 Audi A4 Cabriolet 2.0T Quattro (Past)
2006 Audi A4 2.0T Quattro (Past)
2002 Acura TL-S (Past)
1996 Nissan 200SX SE-R (Past)