For the most part, the geometric wizardy in the intakes only support someone stick tell-tales on an intake and sucking through them with a shop vac. If you actually do a little CFD or some math, you suddenly discover most of that stuff people are putting in there is crap.
As air speed reaches the speed of sound, the boundary layer increases.......... As an example, the crosshairs in the intake are about 4mm thick, when the air speed iat the speed of sound, the crosshairs are virtually ~10mm thick when it comes to the incoming air's perspective. If you stand back and look at that, then how much air are you actually putting into you engine at high rpm?
The basic rule of intakes is that you want all contours to match or flow smoothely together. If you can't necessarily do that then, you can use "stuffing" techniques, but you don't have to do that in today's Banshee aftermarket and you certainly don't ever need a bulls eye in your intake to do it. :geek: