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      01-30-2013, 08:28 PM   #20
M3GTC
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Drives: BMW e92 M3
Join Date: Aug 2012
Location: SoCal

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2009 BMW M3  [5.00]
Quote:
Originally Posted by ms372
do you have a gt2 or gt? im running challenge sport x-pipe with the gt2, even with secondary race cats and resonators its extremely loud. the moment you take out ur primary its going to be loud no matter what x-pipe you use. if you want something quieter u will have to change muffler.
I have gtc and it's loud either way. I ended up going with gintani quad res and it sounds way better much more refined
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