Reviving the thread...
At bimmerforums.com, I emailed the guy who posted this thread...
http://forums.bimmerforums.com/forum....php?t=1546113
He emailed me back with an official list of options for my car (I have an 07 328i) and the results said I have a "N52K" motor. Is the N52K the same as the N52KP in the chart on page 7 fourth post down?
If so, does this mean I have the 3 stage manifold somehow?