What degree Thermostat?

The 160 degree thermostat allows your engine to run cooler, making more power

Sure, that's one of many interrelated factors in how the engine runs. It's not the only one, but you seem to think it's the predominant one. Can you prove it with data? Back-to-back dyno pulls changing nothing but the thermostat would be needed, do you have those? Because if notÂ…