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      10-05-2013, 07:23 PM   #34
Drives: 2009 Z4 sDrive35i DCT
Join Date: Jan 2010
Location: Harrisburg, NC

Posts: 785
iTrader: (10)

I haven't gotten brave enough to cut my exhaust in half yet. I have the milltek cat delete pipes sitting in my garage. I can tell you from my previous exhaust that you will have a lot more exhaust fumes. The secondary cats do catch a lot of fumes and carbon.
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