2011 RAM 3500 6.7
Deleted and tuned MM3 Tuner.
Stock thermostat 200 temp.
Installed 180 temp.
Should I keep stock thermostat temp?
Due to the ecm warmup mode or does my tuner affect it?
To my understanding my ecm doesn’t unlock full engine performance or working potential until coolant temp has reached its setting.
If the engine does not reach a high enough temp for the computer to leave warm-up mode then fuel economy will drop dramatically and your computer will not learn/work through the sensors as one.
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