Do you believe all that? I mean, better flow, better air cleaning, nothing to lose?
It's more or less like running car on water, everyone's a winner. Except for the poor mistress Physics. She's screwed big time.
So, in essence they're trying to reduce pumping losses? And what about resonance?
But your iVTEC come with a variable geometry intake runner to compensate for that, from the factory.
Look mate, these little Japanese motorbike company engines are not 60s hot rods, where you can put a simple mods like intake and exhaust, etc to extract more power. They come from the factory with the best package of power:economy:reliability to ensure you're getting every bit of hp for each bit of CC you're running.
If it were as simple as an intake, to extract more power, and yet more filtration- why'd not it come as standard from the factory?
Why did they bother with K series iVTEC when all they needed to do was to install an intake on old H and F VTEC engines?
That said, try this:
remove the intake pipe from the throttle body of your 2l motor, and try to cover it with the palm of your hand with WOT. Do share the kind of force you experienced. That is unrestricted flow.
What kind of non restrictive filter, with small pores and high filtration, would survive that?