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Originally Posted by JamesM3M5
Yes, you may be able to open the thermostat earlier but it will set codes. The ECU closely controls the coolant temp and doesn't like seeing unusually low temps. It can also slow the water pump until the engine is up to temp. It's a magnesium and aluminum block, who is to say that 97C is too hot? The engine definitely gets too hot under hard driving and track use, especially with 50-100 extra HP, but opening the thermostat earlier does absolutely no good for that.
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Well with a the Tstat opening earlier and the fan running (jb4 maxcool feature), you could avoid these high temps. At 115c the car goes into limp I believe, and just in traffic on a cool day I see 108C. Just seemed high to me...