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Re: Looking for some more power

  Filter particle size is a function of "hole size" and flow rate is a
  function of surface area and "hole size". Paper filter elements are
  pleated to increase surface area. If the hole-size is too small, to
  filter out the smallest particles, then flow rate really suffers. The
  best approach, and I believe K&N's approach, is to use the smallest
  practical hole-size and to greatly increase the surface area to keep the
  flow rate greater than typical paper elements. The K&N filter material
  greatly increases the surface area, allowing high flow rates with small "
  hole sizes".