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Originally posted by predator666

Yes, but to be registered, the car also has to meet all emissions and other standards.  

A roadworthy certificate is only valid for 14 days.

And when I got my roadworthy done, there was no "DB reading" on the checklist of things required for the certificate.

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I read the whole EPA Emmissions Regulation and it says:

The car's noise level must not be more than 90 dB

The test must be done by putting a microphone half a metre behind the exhaust, at the same height as the exhaust or 20cm, which ever is greater. The mic must be angled up at 45degrees to the exhaust flow.

The test is done at 3/4 of the RPM where max power is made, if that number is known by the "Authority" Or else at 3200RPM.

3 tests must be done, they must not differ by more than 1dB, and then the average is taken. It is then rounded down to nearest whole number. eg Test 1 90.9 test 2 90.3 test 3 90.5 ave=90.57

Therefore level is 90dB and OK

If this is not is exactly done at an EPA noise test, I would be complaining.

And you would win, coz thats what the law says. :shake:

Hope that clears things up,

Rhett

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