So far so good, Skip. Still haven't had an issue with the open headers, but I worry about it, Kinda hard to be under 86 DB with anything. Deeper sounds will fluctuate SPL meters more than higher frequency sounds, a known fact.
What's it mean? Our deep throated Big Blocks are at a serious disadvantage compared to the twin engine 2 cycle Rice Burners that are actually louder.
Great info, printed all this out to keep in both boats. Might even laminate them for future use. (It's coming, I just know it!)
Honestly, though, I think that unless your driving like an ass, they'll leave you alone. At least I hope for now.

My fear is this, and wanted to pass this on. Here's what it has come to. We've seen an extreme rash of government agencies visiting our stores and fining the piss outta them. What they are doing is generating income for Job Security, after recent rumours of severe Federal, State and Local layoffs. Weights and measures, OSHA, Fire Marshalls, Building Inspectors, etc etc etc. This is no sheit. We had a store on the west side fined $15000 for not having 2 store key lock boxes (for the police and fire) on the building (A new regulation (2008) on new construction, this store is 10 years old!) and "No building permit on file". We HAD A COPY OF IT, still, it wasn't filed by the city, and it's OUR FAULT!
They are being told to generate funding. I don't care what they say (They all deny it).
Makes sense. with 5-10% of homes in foreclosure, no property or school taxes being paid., unemployment higher than it's really ever been (If you count under employment). Those being paid from those taxes? Well, you do the imagining.
Welcome to Obamanomics!
Tom, Check your Fire extinguishers and don't put anything within 18" of a sprinkler head, they're coming.
Ray