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BMW 3-Series (E90 E92) Forum
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Piper cross filter
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02-09-2021, 11:09 PM | #2 | |
Secret Squirrel
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Rep 393
Posts
Drives: 2007 BMW 328ix E91
Join Date: Oct 2019
Location: StL
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Quote:
what is the advantage of that filter over a BMC or K&N with ridges/folds?
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