Billy - I think we're at a point were I can only validate (or invalidate) what you're saying thru testing. Our test results are the best we can do for now. I will still hold true to my theories based on an educated guess extrapolated from our testing data. Keep in mind, that when you bring in time or rather, the duration of time's affect on liquid coolant cooling thru the tubes.. it's a different variable that we're adding here. In stop/go traffic you're usually at idle or at low RPMs therefore the flow of coolant is slower and the coolant spends more time being cooled in the radiator because we have rpm based mechanic water pumps not electric pumps. Yet, the cold coolant spends less time circulating thru the engine. I've experienced instances where giving the car a little bit or RPM cools the engine faster.
Also, you'll have to redo your diagrams because Nick just reconfirmed that the flow is IN from the bottom and OUT thru the top. Now tell me why this matters again? 
Best of luck this wknd man! I'm desperately trying to go!!
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Thanks! That's a killer garage you have there! No, unfortunately my exhaust is a one-off 
It was inspired by Mac Attack's work on his own exhaust F1 sounding valved exhaust system. I spend a couple years bugging Dave about it. Thanks Dave!
I'm using two vacuum actuated valves which can be configured to operate in 4 different ways. At the track it's open, free flowing, and sounds wicked (free'd up 30wHP too when paired with the CT headers). On the street the valves only open in Vtec (when VViS opens) or I can configure it to open at 0 vaccuum or under boost. When the valves are closed the exhaust gasses are routed thru 50 state legal cats, and into a mixing chamber so the sound is aggressive but not loud. My gf loves it. It's all automatic, street friend, frees up power, and quiet which were all key design criterias.
The whole thing saved me about 39lbs compared to stock too.
