Any Noticeable Difference in a K & N Aifilter

Discussion in 'Engine, Fuel and Exhaust' started by lionsm53, Oct 17, 2009.

  1. lionsm53

    lionsm53 Banned

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    I know that K & N airlfilters last a lifetime. That's a given. I'm just wondering if that there is any noticeable difference between the stocker and the K & N as far as performance or possibly better gas milage on a fuel injected glide? Anyone know or have any first hand experience, between the 2?
     
  2. STEVE07

    STEVE07 Well-Known Member Staff Member Super Moderators

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    If you are talking the K&N put into the stock box,no difference in performance.
     
  3. glider

    glider Veteran Member

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    Replacing the stock air filter with the same size (height) K&N shows little improvement. The most improvement comes from the taller stage 1 filter that is about 2 1/2" tall. The intake flow is increased, add to that some better exhaust and you can increase the output of the engine.

    CFM ratings of Air Filters - Harley Davidson Community
     
  4. kemo

    kemo R.I.P

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    I gotta agree with Steve
    kemo
     
  5. Bud White

    Bud White Well-Known Member Retired Moderators

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    the one that fits in stock box no performance increase ya can feel .. just a lot better filter
     
  6. Jack Klarich

    Jack Klarich Expert Member

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    Just a better filter
     
  7. HarryB737

    HarryB737 Junior Member

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    I replaced my stock Air Filter with a K&N, for a couple of reasons. After seeing the filter media of both filters first hand I think the K&N will breath better, and second I like the ability to clean & reuse the K&N. My bike seems to run better after I made the change... IMO.
     
  8. Drumrguy

    Drumrguy Account Removed

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    IMHO, you are not going to get any better performance just by putting in a K&N filter, I will say I think it is a better filter than a stock filter, but you probably will not feel a power difference just by changing it.
     
  9. NEWHD74FAN

    NEWHD74FAN Experienced Member Retired Moderators

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    If size wise is comparable, difference between new filters would be minimal at best, as the a/c housing/airbox is the restricting factor when bike is new that it was tuned to at the factory. That said, if you increase the volume of airflow by physically changing the a/c housing or airbox size...the airflow changes in direction and volume will be the primary driver for actual performance, not necessarily the filter media...