Quote:
Originally Posted by ovekvam
Not necessarily. It is the car's best guess at the actual speed, and must not be confused with what it presents on the speedometer. And unlike GPS data, it is not lagging behind.
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When i compared my cars obd speed with the performance box speed it was off. Thats my own experience comparing a cheap wifi obd reader with an expensive gps logger. 0-200 kph obd reader gave over 1 second faster
