Lucky your not on my payroll mate. 5 mins! Step into my office.
The filter for me is just not worth it. I'm not letting more unfiltered air into my bike. Someone did a dyno on an aftermarket and found it lost a little. That was in the war and peace sized epic thread on cams.
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Absolutely correct that a filter change alone has a marginal if any effect, true on almost all brands of bikes forums.
But with a DNA you do not give up filtering quality, they are just like a K&N but enlarge the surface area of filter media for increased flow. I would not use an MWR filter as they are simply a thin pc. of oiled foam. They even have a disclaimer on that for their racing filters.
Without further intake mods there will be no gain, removing the snorkel according to some tests will offer a small percentage and measurable gain on a dyno, but in real life you probably won't notice it, except for that growl which your brain may interpret as going faster. There is probably more difference between a dirty filter and a clean filter than two brands of air filters.
That all said some bikes with specific air boxes can significantly benefit from a filter and intake upgrade, but the 900cc WCTwins have the same volume airbox as the 1200cc bikes with 2 throttle bodies. They, even in stock form are getting more air than they can use.
But if you are like me, you change the filter to a HP one after the original wears out and remove the snorkel just to maximize the air flow and add that little growl.