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      10-05-2012, 02:25 AM   #33
leigh
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Drives: 2011 e92 zcp m3
Join Date: Aug 2010
Location: melbourne

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Quote:
Originally Posted by 4sevens.com View Post
akrapovic gt4 full ti exhaust with ess vt2-625
103.7db measured (black flagged) at Atlanta Motorsports Park

with the catted evo my sound was only at 92db

thats a 16x difference!
at what rpm