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      07-09-2010, 11:47 AM   #17
First Lieutenant
Drives: 2011 335XI
Join Date: Jun 2010
Location: PA

Posts: 314
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2011 BMW 335xi  [0.00]
Yeah i guess if theres a primary cat on the downpipe the cat delete is the way to go... Im guessing its the 600 cell count because from what I can see they are the exact same size at the two secondary cats on the n54 exhaust systems ...
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