Frequently Asked Question
MAP will display absolute air pressure. At sea level, it will match the altimeter setting. For every 100 feet above sea level, it will read 0.1" less than the altimeter setting.
Problem: Reads very low all the time. Does not change.
Cause: Scale factor is zero, or no connection between the auxiliary input on the EIS, and the output of the manifold pressure sensor.
Problem: Inaccurate and too low, but changes with changes in pressure.
Cause: Scale Factor and Offset not entered.
Problem: Reads correct when engine not running, but too high with engine running.
Cause: Leak in hose connection to the MAP sensor at the sensor.