Quote:
Originally Posted by pb and h
2. the ecu does not take into account how much fuel is used when starting the engine.
I guess it could be a combination of both.
What do you guys think? If you think about it, the scan gauge would have the same problem since it is reading from the ECU as well.
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Both scangauge and the car's ecu are only estimating. Car knows all the sensors, SG goes by airflow. Neither will be perfectly accurate.