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      01-06-2013, 02:09 PM   #42
Came to the N55 Darkside
Dark_Knight_335's Avatar
Drives: 2011 335 E93 M-Sport
Join Date: May 2010
Location: NY/NJ

Posts: 10,312
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Originally Posted by ronny214
Why not just go with a high flow drop-in filter (un-oiled of course)? Much cheaper, used the stock setup, and I've read that you can still get some of that "woosh" noise everyone wants.
This. I got an HP AUTOWERK foam drop in a while back, and it has been great. Better air flow (however marginal) and the N55s just have that BOV sound by their nature, it even amplifies it to a small degree.
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