Figured I'd start a new thread for this one...
Here's a quick vid I took while I had the engine cover off:
http://www.youtube.com/watch?v=yNPudQRyWAo
What the hell is that slower "whooshing" sound? It's hard to hear the lifters in that video so I might try to get a better one.
I've never been around another boxster that had the engine cover off so I don't know what I'm hearing or what's normal.
EDIT: for what it's worth, this vid was taken immediately following an oil change.