[XfireZ51]

Has the opportunity to try out new thermo both yesterday and today.
Yesterday, ambient driving temps started out at 48F and heated up to 56F by the time I ended the drive. In all driving situations, highway cruise, local street driving, driving under 65 and over 65 ( fan cutoff speed), the coolant temps
Varied between 85-89C.

Today, I got to drive in ambient temps of 73F. Again, in various driving situations. Hiway cruise, temps were practically glued at 86C. Idle would sit at 86C and climb a bit to 89/90. With fan turn on temps would begin to drop. Any increase in Speed would rapidly bring temps back down to 86C.
I changed calibrations to bring fans on later and drop out at a lower speed to make sure the fans were not assisting in the cooling.
With FAN 1 coming on at 88C for low speed driving (<12mph), temps circled 86-88C. High speed driving (>12 and past 55), temps were in the 86-88C range. So just air moving thru the rad is enough to maintain a very stable temp. Driving at 100mph raised temps +1.
Overall, I'd say I am pretty satisfied. The thermo w 2 bypass holes appears to keep enough heat in the motor w cool ambient temps. We'll see what happens next year w 80F+ weather, but so far it looks good.