03-24-2010, 10:01 AM
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Senior Club Cobra Member
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Join Date: Jul 2002
Cobra Make, Engine:
Posts: 15,712
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Not Ranked
Sound DB levels (race track BAN)
With the various race tracks really cracking down on DB levels it is getting tough to meet the sound requirements to get on the track. Some tracks are more lenient than others, but most all of them have an allowed sound level.
My Cobra IDLES at 106 DB (as read from the drivers seat). 95-103 is about max allowed and varies from track to track, typically measured at 50 ft, sometimes a 100 ft. I THINK the measured DB is taken at track side with the car moving down the track, which would be a much higher DB than idle.
I called Supertrapp and they don't have any readily available solution. Anybody got any ideas on what to do? I'm considering replacing my existing side pipes with "something" that is quieter. A loss of horse power is better than NOT being allowed on the track at all!
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