Kind of on topic, I am working on a new engine for my car and thought I would try porting and gasket matching on it. Its a Suzuki G13BB which is pretty common so I can get replacement manifolds cheaply (head as well if need be) if I ruin it, but is this something I should still avoid? I am trying to get more performance out of it, but not really a "track machine/drag car".
Some of you have said it can do more harm than good. Is that worse than stock/original or just not really any better than it was?
EDIT:
I should add, I'm trying to use this build as a learning experience as much as I can.