[burban33]

Despite what you typed, a lower temp thermostat does change the temp in which the engine runs. The fans and the thermostat are what regulate the engine temp. If your cooling system is in good condition then your car should run cooler. As far as performance gains I am not sure but I'd say it is definitly a worthwhile investment in that it would be beneficial to the engine. Definitly look into this if you are turboed because engine temp is a main concern.
Honestly I doubt you will "feel" anything as far as power wise but I am spending my money on it. Sometimes the little hp things add up.

 

[burban33]

With a lower thermostat and fan switch then your engine SHOULDN"T reach the say 200*F or whatever.

No I am not regurgitating what other people have said I am talking from personal experience on other vehicles with changing out the thermostat and such.

Why would they sell all those different thermostat temps on chevy 350's and such if they don't matter? Why would say Jet Performance Products say to put in a lower temp thermostat with some of the computer chips they sell? I am NOT saying that you are gonna get like 50hp or anything from a thermostat. I seriously doubt you will be able to even feel a difference. I am saying that your engine should run a little cooler, which is a good thing IMO.

For the coolant flow into the throttle body, you can just bypass the coolant hoses going into the throttle body.

 

[burban33]

the point of a lower thermostat is that it keeps your coolant from reaching those higher temperatures. Obviously both thermostats are gonna work the same if the coolant temperatures are high enough to have both fully open.

 

[burban33]

hmm, funny thing about that misconception. I went from a 198* thermostat to a 160* thermostat in my suburban. Well I'll be damned, maybe I'm just halucinating but the engine in my truck runs a hell of a lot cooler. It hasn't even come close to the 195 it used to stay at. I drove it from Georgia to Vermont and it never went up 195* and that is a hell of a lot of driving. Maybe it is all a trick and a lower thermostat really just modifies the gauge.