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K&N Air Filters

Discussion in 'DIY (Do-It-Yourself)' started by rich235, Aug 10, 2011.

    rich235 guest

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    Anyone have experieince with these "washable" air filters?

    Are they worth the initial cost?

    Do they clean up after a few years of use?

    Thanks

    rich235 guest

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    RE

    Thanks, I miss the old software, and the resources also. Whoever bought this new setup, in my opinion messed up.

    I wasn't looking for performance in horsepower but quality and longevity. I don't mind spending a few extra bucks on a part if its a quality product that lasts and performs better than its predecessor.

    Thanks
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    pyao88

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    MGarrison

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    Yes - no maf sensor wires on

    Yes - no maf sensor wires on the 80's-era bimmers to get gummed up from air-filter oil. Didn't seem to be an issue with the older barn-door air-flow meters.
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    MGarrison

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    Age old question, although we

    Age old question, although we don't have our old posts to refer to here on these new forums. I think the opinion spectrum runs the gamut - some will argue passionately that they're less than pointless, and you'll also find fans.

    Speaking for myself, I haven't experienced any downsides using a K&N with my E30, but no remarkable upside either. They clean up fine, but should be cleaned at least once a year. I'd be skeptical of particular horsepower claims - I doubt one can tell much difference if they get a 2hp bump by any means. As far as particular performance/hp gains, that would only go as far as your car's engine tuning is capable of exploiting an airflow increase. The stock tuning may have a bit of headroom that could show a hp increase on a dyno, but you probably would be unlikely to feel it much sitting in the car seat. Some have mentioned an increase in intake noise.
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    psmith27616

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    I heard the same about K&N that it messes up the MAF so it was suggested to me not to use one because of that...So I will not...but I will say that they do work fine in other vehicles that I have had as they do clean up well..
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    shipkiller

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    meteck

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    I've actually seen more bad things than good.
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    maxnix

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    K&N don't filter as well, and putting an oiled element in an engine's intake path is not the wisest thing to do.

    Use OEM and annual/12K mile changes.

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