Air cleaner opinion

[taxfree4]

So that's the problem! The indoor temperature and humidity in that lab caused the K&N filter to let 43 TIMES MORE DIRT pass through than a paper filter. I'm sure that out there in the 'real world', a K&N works much better. Just make sure you don't ride indoors!

I can see why a "controlled" humidity and temperature made the paper filter run at optimal performance, if that what you set it at. Again, as stated ", "A small temperature change or a small change in humidity can cause the mass of a paper filter to change by several grams.." That's the legal disclaimer, the escape hatch. Did they run it through a variety of temps and humidities? I don't see that at all. What they did is get a number they were comfortable with and that was it. These are like epidemiologic studies, manufactured data presented to look like fact but are not gold standard. You would think Honda would publish these "facts" as their filter sales would go through the roof, K&N would have to find another business to go into. Maybe you should contact Honda and send them this breakthrough study, maybe they'll even put you in the commercial. I would say don't wait by the phone.