I read the post again, and I still contend that porting IS beneficial. The problem again is that most people try to port a 4 valve head like a 2 valve head and they are totally different. The shine job I referred to is what most people end up with and gives almost no benefit. I have checked out the difference on my flowbench with a B18a head and there is hardly any measurable difference in just polishing the walls and gasket matching versus a stock port. I fully agree that there is a lot of risk out there or at least minimal benefit for somebody with no clue as to what they are doing, but I'm just saying that there are some people out there that know how to work on a 4 valve head and make good power. I doubt that the "all motor" Hondas/Acuras out there are running on unported heads.

BTW, I have to say I dig this website, lots of good info here. I stick mainly to the engine side of things but am always looking to see what the rest of the combination holds. I hope some of you were able to get to the PRI show in Indy last week. Tons of new products out there for the Honda/Acura crowd including a new edelbrock complete turbo system for a D16Y8. Have fun.