im not gonna argue that Hondas have great head flow from the factory, but there are large gains you can get, if you can get 15hp out of porting out a head..not just the I/E ports, but backcutting valves, lighter valves, etc...im sorry, but i concider that a pretty big gain...15hp on a 1.6L engine, thats the same hp gain as 40hp in a 4.6L MUSTANG engine...im not saying you dont know what your doing, thats not intention, because you can lose hp if your head is done wrong..my point, my point is, that head porting which is what this thread is about, is a great investment, your gonna get more out of the other parts you put on or in your engine, especially if your going FI.

PORTFLOW is a very good company, and do good work from what i have heard and read. they are expensive though but you get what you pay for i guess.