Thunderhill, Noise limit of 103 dB Options

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Has anyone run at Thunderhill who can comment on the noise limit of 103 dB. I have run at Laguna Seca at 93 dB limit and had to use mufflers to comply. Does 103 dB allow enough for an open exhaust?
Steve

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QUOTE (Dan (Almaden Valley) @ Apr 7 2006, 08:43 AM)

After a little over 2 years working as the GGR Time trial track co-steward, working at the head of grid as well as in the tower, I have never been requested by the TH officials to black flag any of our cars for sound...period. Never had any discussion on the headsets with any of the corner workers about any of our cars being too loud, or needing to be black flagged for sound. At least with GGR there just has been no sound problems. I think at TH most of the time they just make a suggestion of 103 and asume that most will adhere to it. With our TT series we have cars running headers into megaphones at TH with no issues....not that that combination isn't loud (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif)

So you think that I can get away with open exhaust (megaphones)? I attached a photo of the mufflers that I have but would rather not install them if I can get away with open exhaust. When I last ran at Laguna Seca I had to layer foam around the carbs to muffle the intake noise to pass L/S 93 dB.

Steve