Great post...thanks! Unforfunately, I was unable to get that smaller intake tube off the engine!! I worked like a dog just getting to that small clamp...got it loose...but the damn thing would not budge!! I did get to inspect it and lucky for me it seemed intact so I put everything back together and had a cold beer to ease my bruised ego. Great price for the intake tube from the good guys at Bavauto.com...$15.
Still getting a sometimes very loud whistle decelerating to a stop. Sounds a bit like a "cartoon bomb" dropping...anyone have any ideas? I have a 323i sedan with a 5spd.