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Thread: Airbox cover
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Old 01-08-2013, 04:11 PM   #6
jimfocus
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Location: Wrentham, MA, MA
What I Drive: 2012 Race Red Focus SE

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What I did was I bought a new air box cover for $6.00 from the dealer. I put a K&N drop in filter and bored a 3 inch hole in the front drivers side of the cover. It faces front and looks like there is air flow where the hood, fender & grill meet. I put 2" foam on the top that seals off heat from the engine. It sounds good and lets in extra cool air without totally exposing the filter. If I have a smog test or dealer visit I just put the original cover on.
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