Originally Posted by sjsingle1

hell.......get both....160 for summer..........180 for winter

Originally Posted by senicalj4579

Bear with me here its been a while lets see if I remember this right...fan will come on at 185f with ac on... 226f with ac off and fans turn off at 219f... then if the car cant handle the heat fast enough at 232f-235f the high speed fans come on. Sorry about my first post I got the 219f wrong. 219f is when they shut off not turn on and I think the stock t stat is fully open before 195f Someone chime in to see if I remember right.

Originally Posted by riceburnerZ28

x2^^^I did this and brought a second computer with a tune for the cooling fans...works great!

Originally Posted by garygnu

great thread.too cold of stat and the engine will run and idle too rich ,resulting in alot of carbon build up on the pistons and chamber.

Originally Posted by boostedbird38

ok good info, thanks.

so if i told Frost to lower the fan turn-on speeds by 10 degrees each (high/low), that would enough to help a little but not to hurt performance...?

Originally Posted by senicalj4579

I will be doing that yes but not exactly sure on the #s I will be lowering to yet. My goal will be to keep the water temp in the 190f-210f range but at the same time i dont wanna burn up the fan motors.
The performance gain is very little with a cooler running engine (190f and below) compaired to your engine life IMO. You need to stay 190f above and oil temp 200f and above.