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What thermostat should be used for summer months? My car wont be driven in the cold. Im currently data logging and noticed my ECT's are steady at 198-200. Should I drop to a 180 thermostat? How close will a 180 get me to actual ECT's? Thanks.
 

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Why mess with success? You have perfect temp for a street car.

The hotter your motor can run the more power it will make.

Going 180 is asking for problems at idle.
 
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