I snuck down to the basement again today and swapped out the Code 3 for the stock pulley. Cranked it up and behold ......... no marbles! It's the Code 3 bearing that's been making all that racket. While I was at it I removed my Forgestars and put the stock rims back on. The Kumho's make so much noise I can't tell if I have a wheel bearing going bad or not. And not to mention, I can't tell if the noise in the rear is the differential bearings or something else. I'll be taking a trip this afternoon and see what I can diagnose. I plan on some short pulls to data log the stock boost and see how my AFR's are with it and let everyone know the results.

Les