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      12-01-2012, 07:04 AM   #3
Rhodes7586
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Drives: 2006 330XI
Join Date: Nov 2011
Location: Altoona, Pa

Posts: 112
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Honestly YouTube it and there is tons of videos. I wanted the same thing, nice deep time with no drone. I got a magnaflow cat back and left the res, and secondary cats on. Removing the secondary cats will make it a bit louder but only in the higher RPM's from what I am told. I am thinking about doing this. I will dig up a video and post in later.
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