I'd like to send a thanks out to 330toSRT8, I did the exact same thing he did, even found the same 2" rubber stop at the Home Depot. I did not take off the clamp holding the silencer on, just like in the photo shown, and I had to pull on the silencer back and forth to get it to come off a little harder than I would have liked - what you going to do though?

I did not damage the rest of the intake fortunately, but I was a little worried when it would not come off easily.
I do notice a little more sound now, I doubt there is any kind of hp increase and I almost worry about a loss with the potential for the air flow down the intake possibly being a little more turbulent now. Someday I hope I can afford an Air Hammer

The main reason I removed it was to be able to get at the thermostat a little easier.
Eric
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2006 Chrysler 300C SRT8
- stock with AFE II intake
12.94@109.1 2.00 60
- now Magnaflow HF cats, CORSA and Predator with CMR tune by Ken Bjonnes at DCX Depot...and a 185 t-stat & BT catch can
Bests(all done on Toyo 255s):
60 - 1.939...1/8 - 8.14...1/4 - 12.54...mph 114.1