This excerpt from a post by Pensioner is the only comment in this thread to refer to any kind of actual testing (as opposed to marketing hype, theory, and belief) of the K&N filter. I don't know if the information is accurate or not, but I think it is worth reposting the quote: "ASME (mechanical engineering society) did a study years ago for diesel air filters for earthmoving equipment. They found the best is a folded treated paper system FOLLOWED by an oil bath system (a la aircooled bugs) AND regular maintenance. They rated the filtration properties of the K&N oiled foam type as poor. They were not concerned with HP/MPG only with preventative maintenance." Please, I'd love to believe the K&N is both higher perfomance AND better at filtering out smaller particles than paper filters.... If someone has actual data to support that PLEASE post it to the list. Bill Davidson |
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