[urq] Dang ol' noisy car - suggestions?

[urquattro at comcast.net]

At lunch today, I went through DEQ so I could renew my tags. Apparently Oregon has changed the noise test from "At the inspector's discretion" to mandatory on all cars. My car made between 95 and 100 db at the 2500 idle test vs. the maximum allowed of 93. The inspector let me try a few times, but to no avail.

I'm not interested in changing any aspect of my car's exhaust (It ain't broke, just VERY non-restrictive), I just need to make it a bit quieter temporarily to pass the test.

Somewhere between cramming steel wool into one of the tail pipes and actually bolting something into/onto the exhaust, there must be a clever and easily reversible trick I can employ...preferably without having to get under the car...

Any great ideas out there?

TIA,
Jon