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      02-20-2015, 05:00 PM   #10
djhex36
Mr. Fluffy
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Drives: 2015 AW/BLK M4
Join Date: Nov 2012
Location: WA

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Quote:
Originally Posted by stranger
Dis you remove any of the cats or just the back box?

Sounds very nice, maybe worth trying this without cats before going aftermarket
Everything is left stock besides removing the rear box. I can't imagine it without secondary cats and/or downpipes.
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