With my TT chip, FMIC, 160 T'stat, OEM radiator & single fan, my coolant temps run around 160 & warms up to 170 then the fan turns on & brings it back down to about 162. This is sitting in the garage with minimum air flow across the front end.
I have yet to see my temps during summer time running since I installed the FMIC. I figure that I may be buying one of those Alradco radiators later this summer.
~JM~