Why would you spend the hard earned money for a PORTED Head.... and then have the small intake port to strangle the add'l power?? ...."your ported inlet manifold has made 5-10lb of torque without a remap". OR...... if the Ported Head is in your future, make the intake change now, in your garage with your tools, and be that much ready when the Head is changed out!! Matched Ports allow for smooth interface of air flow without loosing velocity and cfm!! Modified and Port matched Intake manifolds for the r53's: $195.00 exchange!! IF you are running my Ported Head , the matched manifold is only : $100.00 exchange Thanks... Thumper
Look at the STOCK intake ports... vs the ported INTAKE Ports!! Just me............................ Thumper