Thread: N52 Exhaust Help (Headers + ?)
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      06-29-2018, 08:34 AM   #38
Biginboca
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Drives: 2009 E92 328i 6MT
Join Date: Jun 2017
Location: Boynton Beach, FL... USA

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I kept all O2 sensors in and don’t see a reason why you wouldn’t. My car runs great and throws no codes so I figure they are definitely worth keeping lol
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