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      08-09-2007, 01:35 PM   #10
droptop335
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Drives: '07 335i (E93)
Join Date: Apr 2007
Location: Back in SF Bay Area (Tri-Valley), WooHoo!

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I guess it's only worth it if you can get additional airflow (volume) at WOT, and even then only if the filter is the "weak link" in the entire engine breathing pathway. I doubt that it does any better job of FILTERING than the stock filter.
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