[widebody911]

Ok, I spent some time this weekend playing with it, and I don't have those bolts. I think this is a difference between the plastic and aluminum setups. Mine has a huge rubber sleeve - perpindicular to the cross-section of the manifold. The clamp on this is of such a design that I can't tighten it any more. I tightended up all of the other intake clamps that I could get to.

I'm not sure it made a difference. It seems to run a little better, but it's hard to tell. It still has a vibration at idle, and lots of idle oscillations when the weather is cold.