19-07-15, 09:57 AM
(18-07-15, 11:00 PM)slappy link Wrote: Every time I see a picture of a gen2 air filter it is filthy, when I replaced mine with a k&n it looked like the bike had done 80000 miles not 8000. When I had my gen1 I changed the filter every 10000 miles and it never looked as bad as that.
Only reason I can think this happens is because fuel injected bikes need to force more air in to the larger air box that they tend to have and so they suck much more crap and dirt in.
The air filter on either model only sees atmospheric pressure and the pressure drop across it should be minimal, the dirt has nowt to do with EFI - I think it is just in a more vulnerable place to pick up road grime, particularly when it is raining and the dirt is in an aerosol.