Took a RH corner today on the higher side of fast, this noise started after. Got worse as I pulled into work parking lot. I was a quart low however the oil light did not come on. Only mods to the car are an Alta CAI and MiniMadness 15% pulley. Car is an '05 R53 with 66k miles and was ~4k on the current oil. After inspection, I did notice the vibration dampener wobbling slightly.

Video: http://www.youtube.com/watch?v=febHB6T3jjs

 

Sounds like it could be your dampener.

 

A bad dampener can make that much noise? I'm thinking the worst, a rod, but a dampener would be way less $$

 

It sounds pretty bad to be honest buy if you have play on your dampener it could be it. Went through a oil starvation on my old 1.8T Jetta before and it ain't fun. It sounds much like yours.