on the passenger side of the lower intake, there is a cap with two 10mm bolts. take that off and grind out some of the middle divider. this will allow more coolant to flow through that little section. the reason behind why you would do this is because when you close up the coolant ports going to the blower and throttle body you lose a marginal amount of flow to the rear head. to make up for it you open up the side of the lower intake coolant port a little.
make sense?