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K&N air filter
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10-01-2021, 12:28 PM
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SilverCheetah
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Drives: 2017 BMW 340i xdrive
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From what I read, the oily filter has lower filtration efficiency than the dry one.
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2017 340i xdrive. MG flasher Stage 2.5, xhp stage 3, Konig hypergram 18'
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