Stealth CAI--What to expect and what NOT to do. - Ford Focus Forum, Ford Focus ST Forum
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Old 06-21-2012, 02:07 PM   #29
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Join Date: Jun 2012
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What I Drive: '05 ZX3 2.0L AT

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Rather than R&R the highly restrictive factory '100k' air cleaner for $90 myself, or $180 installed at the stealership (surely you can't be serious‼), I went online and found this site for ideas and input. The Stealth CAI is a brilliant idea!

I've read that many of you are having issues getting a 3" dia cone filter to fit around the MAF tube. My solution is to use a K&N RC-9160 universal filter because it features a 3.125" inlet flange. Got mine on fleaBay for $28
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