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      09-03-2012, 04:17 PM   #4
alpina527
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Drives: 2008 E92 M3 DCT JZB/FR
Join Date: Jan 2010
Location: London, England

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Quote:
Originally Posted by rjd598 View Post
The basis for the tests are to use the decibels app and I held my iphone about a foot away from the exhaust tips. post up your readings!
Could you post up a photo of exactly how and where you hold the phone to give us a benchmark to work to.

eg, do you hold the iphone on the sides with the front face facing the exhausts directly, and a foot back at the same height?