Looking to port and possibly polish my om617a head. Any advice on this? Did you see a difference after the port job? Any advice before I dive in? I've already have an 8mm M pump mounted, Hx30w turbo at 20psi (will be 30psi soon) and a TMIC.
Looking to port and possibly polish my om617a head. Any advice on this? Did you see a difference after the port job? Any advice before I dive in? I've already have an 8mm M pump mounted, Hx30w turbo at 20psi (will be 30psi soon) and a TMIC.