Big Ported Head What Are The Gains

[Cupra Gsy]

What gains would you get from fitting a big ported head from an AGU Golf to a AQX Ibiza. Would it be worth doing?

[Ricardo_Smooth]

iirc it would bring it down on power. (sure i heard somebody saying so before, i could be talking inlet manifold though)

[tommy2008cupra]

ye i dont think its required unless ur goin BIG lol

[Cupra Gsy]

but surely bigger equals better plus planning on going ko3s hybrid soon

[Alps Pacino]

bigger doesnt always mean better, normally bigger ports in the head mean more lag and boost would come in further up the rev range which isnt really very usefull if yor not gaining any power from the bigger ports. I'm not specifically talking about the 20vt big port head but just in general.

[ibizacupra]

Originally Posted by Cupra Gsy

but surely bigger equals better plus planning on going ko3s hybrid soon

nope unless you are American, bigger is not always better
smallport matches the k0x turbos nicely.
fitting a largeport to a wheezy little k0x turbo will loose you torque as the motor will consume the available airflow out of the turbo sooner.. boost will fall off like a stone up the revs.
keep is small for small turbo.. go bigger for big turbo (GT30+) imho