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· Junior Charter Member
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Using the 160 degree stat didn't affect it because a stat cannot make a car run cooler. All it does is make it run warmer, the system is designed to have a margin of cooling above and beyond the worst case so it cannot overheat.

Hence, all the testing on tracks out in the desert.

If the car won't overheat at low speeds and idling in 100+ degree weather, no problem. The gauge should stay under 210 - with 16 pound cap, boiling is elevated to 228.

195 is about what most factory EFI systems require to operate, less than that and the computer never gets out of "choke" mode to operate off the O2 sensor.
 
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