Man, I'm having the same problem. But I'm getting thick exhaust fumes. They already replaced my spark plugs and an ignition coil and I still have the exact same problem. <<BTW, is an ignition coil the same thing as a coil pack? I'm ignorant on this stuff.
But I also am throwing a code. Interesting that you never did.
I just pray that it's not the HPFP going right now...I need to get mine back to the states for that damnit...I have no more warranty here!!
In the process of restoring an 07 335i