Quote:
Originally Posted by tjts1
...Thats why all OBD2 systems use MAF not injector PW to calculate fuel consumption.
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if you mean mpg monitors, they use MAF (or figure it out from MAP/RPM/temp) because there isn't an obd2 pid for pulsewidth, and they hope for stoic. Vacuum referenced regulator is good in that it standardizes the fuel delivered for a given amount of open injector time regardless of the manifold pressure.
If you mean OBD2 ECUs use MAF and not injector PW, well, that is because injector PW is an OUTPUT from the ECU ?!?