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IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

second filter

Old Sep 21, 2011 | 06:46 PM
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Default second filter

do you take out the second filter when using a k&n drop in filter?
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Old Sep 21, 2011 | 07:45 PM
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The 2nd filter as in the one in the top of the upper chamber? No. That's permanent and non-replaceable.
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Old Sep 21, 2011 | 10:20 PM
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thanks for reply. does it ever get dirty where it will need changing like a stock filter?
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Old Sep 23, 2011 | 11:34 AM
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No, it's there as part of the emissions system...do not remove unless your state could care less about emission. Cough cough, SC! LOL
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