My experience with test pipes, which are the Motordyne v2 ones, is they did not really increase the overall loudness of the car much unless it is really cold outside. If I had to try and give an estimate...I would say....mayyyybe 10% - 15% increase on regular days.
For myself, switching the exhaust did more for loudness than test pipes did.
[EDIT] Just figured out a better way to describe my experience. Post test pipe installation, it is not any harder for me to have a conversation in the car at a normal speaking level.
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Originally Posted by b1adesofcha0s
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Last edited by Spikuh; 01-23-2014 at 09:48 AM.
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