Do Performance Air Filters Actually Increase Horsepower?

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SgtHop

I don’t think I’ve ever heard anything about the Crosstrek, or anything from Subaru being underrated. Someone should probably calibrate their dyno.

11/14/2018 - 18:24 |
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Anonymous

What I have seen in other air filter tests, is that a clean K&N filter is great. However, they plug up quickly, then are not so great. If you want a filter that is very good, but requires regular maintenance, go with the K&N. If you want a good filter that requires minimal maintenance, go with the stock one.

11/15/2018 - 00:54 |
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Anonymous

Other air filter tests I have read had similar results with new filters. They also determined that the K&N would become restricted first, It has little capacity for dirt. Unless it’s kept very clean it may cause a loss of power. I’ve also seen a significant number of cases of mass air flow sensor contamination after the owner cleans and re-oils the filter, and a few cases of a high flow filter setting a check engine light just because of the flow difference.

11/15/2018 - 14:30 |
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Anonymous

A pull without any airfilters? What would the figures be then?

11/18/2018 - 05:50 |
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Anonymous

Dit you guys reset adaptive values before every test?

11/19/2018 - 12:55 |
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Anonymous

Can’t beat wrapping a pair of women’s tights around the intake box with no filter !

02/14/2019 - 21:12 |
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Anonymous

k&n arent worth it stopped buying them years ago the dont stand by their lifetime warranty , had one on my 1997 jetta tdi ,for a few years and the metal rods built into the rubber rusted and the filter was worthless , ,and no they didnt stand behind their warranty since the place i bought it from when out of business , save your money and just buy regular filter s

02/14/2019 - 22:28 |
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