I have a Cobra water pump, and a ATI 10% overdrive balancer. I wouldn't say nice and cool on the interstate, but manageable. 60% Engine load and up, like going up a steep grade, will bring the temps up on the interstate with the A/C on.
Keep in mind I am micro managing with a OBD2 reader, as the stock gauge does not move until the temp reaches 230. I would never notice 99% of this temp movement while watching the stock gauge.
Ryan just called, and said they are working on The Mark. They are going to tunnel from the lower terminator opening to the cooler with high temp foam, and then foam the edges between each cooler, creating only one way for air to travel through the coolers.
Sounds promising... Ryan said they had positive results each time they have tried to tunnel and foam between coolers on high hp cars with cooling issues
Should be done tonight, or tomorrow at the latest.