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Originally Posted by ekam
I've had K&N in my old car and it caused it to fail emission test. Put paper filter back in and it passed with flying colors, never K&N again.
They're in the same category as magnetic drain plug, if they're so good, why won't manufacturer put them in all their cars?
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I use K&N filters in my other cars and never had a problem. Too much oil out of the box will foul the MAF sensor.
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