RE: streetsmart
I have a rubber exhaust deflector on the end of my thrust mac's pipe, and it does make it a little quieter, but not by much. Nitro is nitro, it's noisy. Certain engine/pipe combos are louder then others but only by a few dbs.
If you lived next to an airport, would you complain that the 757 is louder then the 747? No. Noise is noise, and although one may be slightly louder then the other, you'll hear it just the same.