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Old 10-11-2012, 11:14 AM   #113
jehu
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Join Date: Jul 2012
Drives: JDM LN130 Toyota Hilux Surf
Location: Melbourne, Aus.
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Quote:
Originally Posted by Sony View Post
Let me see if I can get ahold of a Decibel meter...being in the entertainment industry, I should be able to get one from one of my sound engineer buddies.
awesome.
in Aus these are the legal methods to check an exhaust dB http://www.ntc.gov.au/filemedia/Repo...stSept2006.pdf
or simpler directions: http://www.ehow.com/how_6150114_meas...ust-noise.html
but in summary, 500mm away from an exhaust at an angle of 45 degrees.
with revs at 4000rpm (for our car), and 3 tests results all within 1dB difference for it to be counted as an accurate result. hope that makes sense.

cheers
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