4age big port head = small port intake or custom, (for the 7agte) Nik, fallenhero or kwanza for this one . Options

[frotou]

What difference can be noticed on a turbochaged big port head with the big port vs small port vs custom intake manifold ?

Thanks for help.

Claude

[frotou]

I mean by custom intake manifold ; a bigger square aluminium box with four bigger runner coupled with a 3" throttle body. (we can see some example on club4ag).

Thanks for help.

Claude