I have some data on what the higher coolant temperature did to performance. When tuning the spark MAP for best acceleration I made numerous datalogs in the same spot of road. repeated those runs today. 30 mph is 3,400 RPM and 50 MPH is 5,200 RPM, shifter in 1st from a 25 MPH roll. 40-70 MPH starts at 2,950 rpm and ends at 4,600 starting in 2nd gear from 35 mph. I see why it feels like it has less power, it does. 4* less timing with the 195*F at WOT due to Coolant and IAT compensation. I will definitely be picking up a cooler high flow thermostat before the weather heats up again next summer.
180*F Thermostat
30-50 MPH = 2.76s
181*F Coolant @ Start
183*F Coolant @ End
106*F IAT @ Start
104*F IAT @ End
40-70 MPH = 6.74s
185*F Coolant @ Start
183*F Coolant @ End
108*F IAT @ Start
99*F IAT @ End
195*F Thermostat
30-50 MPH = 3.09s
196*F Coolant @ Start and End
122*F IAT @ Start
118*F IAT @ End
40-70 MPH = 7.36s
198*F Coolant @ Start
201*F Coolant @ End
116*F IAT @ Start
108*F IAT @ End