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2009 Ford Focus Air Filters - Custom Fit

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Latest Customer Reviews

K&N Air Filters Reviews


2009 focus

Reviewed By wesley h (QUARTZSITE, AZ) Reviewed for a 2009 Ford Focus —5/10/2013 6:59 AM

We seem to have picked up about three miles per gallon-hard to judge any power increase as the focus is really snappy to start with. Very pleased with the K & N filter.

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Green Air Filters Reviews


Easy BOV sound alternative

Reviewed By Matthew L (Oxnard, CA) Reviewed for a 2013 Ford Focus —3/12/2015 9:29 PM

The boost-dump sound is why most people will be picking this over a K&N or similar filter, so I'll say its definitely a good sound. I was worried about it being too loud and ricey, competing with my Borla Exhaust for attention, but it doesn't. That said, the induction sound is also louder, so if you're not a fan of louder whistling on acceleration, this may not be a good call. That boost-vent though...

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