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  1. K&N Drop-in VS CAI

    2.5L DURATEC Performance
    I was pretty happy to find a K&N filter in my stock airbox after I bought my car.:biggrin: But I wonder if it's almost as efficient as having a K&N CAI? The stock box seems to be designed for cold air induction anyway, though I know I'm missing out on some awesome intake sound. I've read a lot...
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