It's just more thoughtless behavior from the ego challenged "look at
me" crowd. There's no reason at all why a pair of 454s has to be
louder than any other well mannered I/O except that the owners prefer
it that way.

Im not sure I agree...

First, a less restictive (louder) exhaust is in fact a performance
enhancment.

And not "all" high-performance boaters are "look at me" people. I have been
building high-performance boat engines for years, and do more so for R&D,
than fun and thrills.

Thus why I go out at the least busy times.

Take care.

--
-Netsock

"It's just about going fast...that's all..."
http://home.insight.rr.com/cgreen/