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  #1  
Old 07-19-2010, 08:02 PM
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Default which thermostat

Right now my truck runs about 170 degrees. All that is on it is a high flow muffler. I plan on getting a spectre intake, a super chip, and a full catback exhaust. So what temp thermostat should i be running?
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Old 07-19-2010, 08:04 PM
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Usually people run a 180 T-stat to run cooler but yours is doing 170 haha. I know I threw a 180 in my truck to make it run cooler
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Old 07-19-2010, 08:52 PM
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would it by chance get better gas mileage if i ran a little warmer t-stat? I heard that it would because i dont have many mods.
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Old 07-19-2010, 09:04 PM
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Well from what I have heard about it is that when the truck runs cooler it sends more fuel to the motor. This is supposed to be more efficient with fuel delivery which in turn increases MPGs. Now this is what I heard I am not a mechanic or anything haha.

I guess wait and see what other guys have to say about it.
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Old 07-20-2010, 02:39 AM
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The cooler t stat in a gas engine will rob you of MPG, your t stat seems to be running fine though IMO. I would not suggest a change. You would be wasting your money. Your tstat runs where you would want it. I just installed a 160 degree hypertech powertat and a flowkooler water pump. I gave up on increasing my MPG long ago.
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Old 07-20-2010, 05:27 AM
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I learn something here every day. I did not know a lower degree T Stat would decrease MPG.
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Old 07-20-2010, 06:56 PM
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If yo live in a state that requires you to smog test your vehicle the lower Stat will also mess up your smog. I think, it makes it run richer.
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Old 07-21-2010, 04:19 AM
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Does run a little richer but if you have a programmer or a massive exhaust system (or both like I do in this case) you can benefit from a little added richness from these mod's that tend to lean you out a little bit. (My 3" inlet 4" outlet exhaust especially!).
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