pretty consistent, and I just have the stock radiator with the TopSpeed UD pulley (mind you, I also don't have both front and rear lower engine covers either). Without A/C running in this Sacramento weather, my temp is always between 185 and 195 dependent on ambient temperature and driving conditions. With A/C running, it will go up to 205 and an occasional 210 in stop-and-go, but stays at 190 or so during highway cruises.