Quote:
Originally Posted by Fe Butte
Check out the Harley air cleaner set up at www.freedomcyclereno.com.
I know of some people who run their K&N oil filter dry, I barely put any oil on mine, just enough to know it has some.
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Running them dry greatly lessens their ability to filter.
Quote:
Originally Posted by Fe Butte
A over capacity CFM filter will probably get you the maximum needed after some dust accumulation, just a thought.
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Bingo! Doesn't take a lot either.
That's why I say the numbers don't tell the whole story. Often you will see an increase when you remove the filter during a dyno session -- even though the numbers say you shouldn't.
Dunno why, but suspect that while the smaller filter will flow the volume, it doesn't flow as freely. Again, haven't experimented and definitively found the reason, just doof logic.
If you're stock or a mild upgrade and / or you rarely get into it - stock or the Stage I will be all one ever needs.
OTOH, if you're beyond that, I like the Zippers because it flows really well - and fits under the stock cover. I understand the "green filter" that Hillside came up with also flows very well and fits under the stock cover. My $.02 FWIW.