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528i N20 custom dual exhaust and AFE air filter (using any stock/aftermarket exhaust)
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05-23-2015, 03:25 PM
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2point6
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Drives: 2012 528i
Join Date: Apr 2015
Location: Tucson, AZ
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I realize that this post is old, but were there any performance gains from adding this exhaust set-up? What diffuser is in your picture? Anyone with info regarding my questions will be greatly appreciated. Thank you!
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