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      12-03-2012, 05:27 PM   #10
E93Blackhawk
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Drives: 2008 335i M sport
Join Date: Oct 2011
Location: London

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If you don't want that louder sound, don't go for cat less DP's...

I would say catted downpipes, but then again, if your looking for power, cat less is the way forward tbh.

Stock OEM muffler is perfectly fine as mentioned till you get to high HP.