Read up on intake theory, then take action.
Some experiments have been done.
Straws were used in one.
Length of the runner matters.
Generally, the volume of the intake between the carb and filter needs to be at least the volume of the cylinder.

Intakes rely on the low pressure created by the piston falling. Exhaust gets shoved out.
A restricted intake can keep exhaust gas from moving out during the overlap.
A tuned intake will have a wave standing when the valve opens.



Under the hood of the car there is a chamber molded into the side of the intake runner even before the filter. I wonder what RPM makes it resonate.

You have to think of the 2 options shown in the links as very expensive jewelry for your bike. And if you're doing it for that purpose, you'll be nicely accessorized. If not mistaken, they do accommodate a K&N filter. Any performance benefits are negligible.

Call me a tight wad, but the price of the hypercharger is approaching what I paid for my Savage. And then, don't let my bias keep you from doing what you want with your bike. I have my preferences as well. Make it your own.

Some of those expensive ones create a obstruction , then attempt to correct it, and in the end do nothing.  I want the vacuum to be sucking gas and air ,  not moving flaps open and closed.

I have a Hypercharger on my Sporty; a waste of money.
It is just an expensive cover over a normal K&N filter.
It was put on by the previous owner.
I am replacing it with a nice simple velocity stack with micro screen filter.

I use a 2" pvc pipe extension inside a gutted stock air box ,total length of my intake is 17" (which acts like 18") ,filters of the "Oldfeller" design(2),have been custom made and moved to the outside walls of the air box. this gives me a 4% boost in VE between 3800and 4500rpm,and a 7% boost in VE between 4900-5600rpm.The bike looks stock ,but preforms a bit better.