Originally Posted By: TC
"K & N Air Filters - Good Or Bad?" Ever since I went into a Pep Boys many years ago, took a new K&N air filter out of the box and held up against the ceiling's fluorescent lights, I said "No way, Jose!" (Apologies to Jose'.) And I feel the same way today. When holding it against the lights I could see dozens of tiny, sand grain sized "stars" where the light was coming through. Plain n' simple, I call those "HOLES." (Apologies to Courtney Love.) To use an engineer's techno-speak, "No air filter should have holes in it." That's bad, m-OK? (Apologies to South Park's Mr. Mackey.) You want “high-flow” for a street car? Just by any good, name brand paper+synthetic filter and change it out well before the mileage called for.
Dude: Did you think to look at it under magnification? Signed, Jose