Would this help a non-turbo car?

 

Are people cutting into the wheel-well wall or just into the box itself and drawing hot engine air?

you can take out the bottom of the air box , which i did on my full time 4wd turbo a/t wagon , it's hard to tell if it helps because i did alot of other things, will give it a cool sound , i also put in a k-n filter , accell coil, ngk plugs, cat mod, and using dura blend castrol 10-w-30 , about 24mpg city, 28mpg hi