Bob - interesting to see your coolant temperatures dropping more the longer the run went on. I know there are different aftermarket replacements but assuming you have a standard 195F thermostat (as indicated by your starting temp) it would have actually been starting to close by the end of your run. Unfortunately the data cuts off as it really starts to drop. IIRC, they are supposed to close completely around 175-180F.

I don't have any fancy data logs, but this pretty much confirms what I've seen in practice with my car. I know my 2.5NA is a different beast than a built turbo motor, but I stand by my belief that if you have cooling problems on this car it's because you haven't gotten all the air out of the system or have made no attempt to duct/vent things.