I did six months of research and had blocked coolant passages as a test. Temps logged were not any different.
However... I'm modified past using this small coolant flow through the supercharger and into the throttle body. Research has been done with no change in temps that stopped me from pulleying down at that time to a 3.2" pulley (yes..this was the ported charger I had on the car) With my new setup and many other cars (GP'* mostly) running the same setup...I'm confident that there will be no issues.
Keeping the EGR in my emission testing state is a wise move for me. Having a programmer to tune with, the ability is there to use or not use it. I plan on doing more research and testing to vet it out.
Dame..I'd check your thermostat and gaskets. This particular vehicle has never taken anything more than a couple miles to come up to temperature. In your climate, I'd suggest the higher flow of an Intense T stat.
Also in the install is another test. I am going to find out in the first 10 minutes if pre 2000'* (S2'*) need to run a paper thermostat outlet housing gasket. This one is installed w/o it.
Jim... it'* all good buddy. The buca will be chillin for you.