The maf may or may not react in similar fashion in its voltage change, but basically it is putting out low voltage during low volume and high voltage during high volume of air so there is potential. I was thinking it would be much better to input and compare voltages using the same data acquisition (DAQ, scope, fancy multimeter etc.) so that the data could be precisely compared. This wouldnt be do difficult, you could monitor them with individual devices (like consult for the maf volt, and some sort of voltmeter for the map sensor). Once the VQ voltage "curve" (which should end up linear with a map sensor) is set properly, and the correct TP is met, and the entire map retuned it should work.īut before you can even begin with any of that, you would need to find a suitable map sensor, and log/compare data under the same conditions as the maf sensor. ![]() ![]() ![]() We are also not able to monitor this TP easily during troubleshooting. ![]() I have been thinking of this same thing, map sensor hmm.Ģ main things are helpful, us having good access to the VQ voltage data, and also the fact that the oem maf sensor reads 0-5v, or at least close enough.Ģ big disadvantages, ecu uses a calculated TP "behind the scenes" and then modifys it once again on the map.
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