Quote:
Originally Posted by groar
I have only diesels and I have just blocked the lower grill of my car. From the dash board the temperature is greater, but lower than when I'm at highway speeds.
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Remember, it's intake air temperature and not engine temperature that is important. I measured my intake air temperature with a houshold digital thermometer. I put its remote sensor at the inlet to the air intake so it measured the temperature of the inlet air. I could read it from inside the car.