Back To The Future
The water system runs with two Robert Shaw NASCAR-style thermostats (190 degrees) which control each bank to prevent it from restricting flow. When the thermostat is closed, it allows the circulating water to bypass the radiator and goes back into the water pump's inlet (like a mechanical fuel-injection loop). This allows the engine to get up to operating temperature quicker, and since the EFI system is reading water temp, it can adjust to make more power.
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