If your exhaust had a hole in it, you'd get that fartpipe ricer sound (very high picthed). I would guess that your cat converter is starting to go? Terry is usually right, so check what he said.
Dan Parmelee 1999 Acura Integra SiR-G coupe "I heard Affleck was the bomb in Phantoms" "Word, bitch! Phantoms like a muhfuka"