When I took off my inlet manifold I looked right inside at the inlet ports. Jesus, how much restriction? Were the secondary inlet divides the two heads it basically steps down with a large ridge. Boy, i wanna get in there with the dremel. Bit dodgy doing that though. Don't want debris traveling down the ports.
Has anyone else modified their own?
Clearing all this unwanted metal out of the way would surely give me some decent power gains.