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      08-07-2013, 02:49 PM   #11
momo3605
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Drives: 2016 M4
Join Date: Aug 2012
Location: Norcal

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Yea, depends on what you want. Just for sound, do the rear section. Test pipes will get you about 80% of the possible power, and catless Xpipe will get you all the way (but with way too much sound if you ask me haha)