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» Hello Spec Miata Community » National Auto Sport Association » NASA Central » 105dB limit at Autobahn

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Author Topic: 105dB limit at Autobahn
Glenn B Verified Driver
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Car #: 76
Year : 1992
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I just purchased a spec miata and am planning to run it in NASA HPDE at Autobahn this weekend (7/22-7/23). The car has a Dynaflow muffler and I would classify it as fairly loud. However, I'm new to this racing game and don't have a feel for how loud 105dB is. Just wondering if I should be concerned.

wheel Verified Driver Made Donation to Website
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Car #: 20
Year : 92
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That's very loud. I think they bounce you at 103db at the Runoffs, as I recall.

spdmonkey Verified Driver Made Donation to Website
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105 dB would be akin to Toyota Atlantic or other high revving pure race engines. Its not impossible for a street engine to get there, but its probably rare. I have seen SM's at 100dB many times and every now and then at 102-3dB. Having done Sound Control at a dozen or so races I would tell you that you are gonna be just fine with the dynaflow muffler. As always though YMMV.

db

Glenn B Verified Driver
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Car #: 76
Year : 1992
Posts: 4
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Thanks for the info. I've since learned it's much louder inside the car than out. So, I'm sure I'm not even close.

   

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