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Old 09-10-2012, 10:56 AM   #1
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Join Date: Sep 2012
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Location: Bradenton, FL
What I Drive: 2012 Ford Focus SE Sedan

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K&N Drop-In/Stock Housing Lid

Hey guys, I have a question about the whether or not to leave the stock filter lid installed. I've done a lot of research on the forums and I am definitely going with the K&N drop in; however, I am still confused about whether to keep the lid on or not. I know there might be some heat issues with removing it and some obvious restriction if it remains... What do you guys think is best to achieve the most potential from the drop in? Thanks guys!!

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