11-03-2015, 11:15 AM
Unless people know what they're doing when porting them, yes you can make them worse with ease, but there definitely are gains to be had.
I'd personally be sorting out the manifolds and turbocharger long before then, your money is better spent popping on a modern variable nozzle turbo and getting it working along with nozzles and a CR pump that allow for decent IQs at high RPM, you can add all the air you like up there, but if you've not the fuel, no point. I've seen very few motors that are actually capable of this!
I'd personally be sorting out the manifolds and turbocharger long before then, your money is better spent popping on a modern variable nozzle turbo and getting it working along with nozzles and a CR pump that allow for decent IQs at high RPM, you can add all the air you like up there, but if you've not the fuel, no point. I've seen very few motors that are actually capable of this!