I have been running my car with a 160 t-stat and set my cooling fans to 180 but am only getting 13 to 17 mpg so I have slowly worked my way back to factory settings(192 t-stat and factory wiring) and I am noticing that it usually runs at 190-200 with the air on(fan speed low constantly). While on the highway, cruising at about 70, the temp got up to 210 and was climbing slowly until I got off interstate. Is this normal? Also, if I remember correctly, the fans kick on high at 230? I know my computer doesn't signal the fans to kick on at the right temp so it would overheat but with the air on now they are always on so I don't have that problem right now but I am tempted to make the fans turn on high speed with the ac and low speed signal just not sure what way I want to go yet... Thanks for any insight.