I have been doing a bit of reading on NASIOC about porting and polishing. Im not worried about porting the heads as that has been done at the factory. What I was interested in is opening up the inlet of the turbo, throttle body.
https://forums.nasioc.com/forums/showthread.php?t=729711&page=24
What I am wanting to know is there any real gain to doing this. What I mean by this is it going to be a noticeable difference like earlier/better spool.
I can see that opening up the turbo and TB inlets should flow better but not sure of any downsides.
I wouldnt mind port matching the exhaust manifold at a later date, as that's one area I know can help.