Update - BMW Corporate's DME update has stood the first test of cold start. 18F in detroit last night. Started it up with the higher RPM, and as it dropped to about 650/700 rpm, there was a slight hickup, but then stabilized quickly.

Two small issues.
- A few times when lightly driving waiting for the car to completely warm up, the car felt like it cut fuel for a split second, and then engaged, causing a "rear ended" jolt feeling.

- The fully warmed up idle is around 550 rpm, so I think I didn't receive the 800rpm "quick fix" programming. The idle vibration is still very prominent - it's almost like the seat is a big cell phone, and someone's calling. There's a cyclic idling, where every second, the RPM's drop slightly and then come back. The vibration disappears when you add any throttle. It doesn't change between drive and park/neutral.

I hate to bring it in for this, as I'm starting to believe my issue with the embarrassing cold start is fixed. However, I still don't think it's normal that my body feels a constant uncomfortable tingling/tickling from the idle. Anybody else with a 4.4 feel vibration at idle? It didn't do this 14K miles ago when I picked it up in Feb 2009.