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10=-4 on the clean engine, surprised to hear that you feel the air filter is more or equally important to change or clean more often, which brings me to my question to you. The air filters sold by K&N, which I used for 20 years, no longer. It has been my observation and in reading, these filters let in more air, yes, but also let in more junk into the engine, yes?
Many users reported dust cover intake tube from using K&N air filter, some had spotless air intake. Nobody report dusty air intake tube using OEM air filter. Both cases are with no air leak.
I don't like the idea of cleaning and oil a dirty air filter every year or 2.
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Proper combustion has an upper threshold where it mixes and reaches this threshold and any more is not needed,this is correct accd. to motorcycle consumer news. My point is that a proper quality paper air filter lets in the proper threshold of air needed for optimum combustion to take place. That is to say, their research shows that more air does not mean greater combustion, yes?
OEM air filter has more capacity than needed by the engine.
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So the K&n is a waste of money according to research and analysis. A clogged and unchanged paper air filter will not offer the proper threshold of air needed also for proper efficient detonation to occur,what is your take on the subject. Please name the air filter you use.
I have OEM air filters in LS400 and S2000, Mann air filter in E430. I change air filter every 4 years/40-50k miles. The filters are not clogged yet, but the seals were brittle because of the engine heat, it did not completely seal against the air box so that unfiltered air may pass through the seal.
PS I use pantyhose at the intake mouth on front of the air box as pre-filter, it catch leave, bug, sand ... So that the air filter only need to filter dust, no large objects on it to obstruct air flow.