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My concern with the MAP was thus. You have a fixed voltage range for the sensor outputs. If you spread 4bar of readings over that 5 volts of range, you get half the resolution of a 2bar sensor over the same 5volts. As you say, the ego is an autocorrector, and this may not matter at all, unless you get a false map of MAP values as a result of the low sensor resolution.


I don't think it's that critical. IIRC, the MAP sensor reads in .01kPa increments and AFR doesn't change dramatically from vertex-to-vertex. So long as it's hitting the AFR target say +/- .1, it should be ok.

Frank

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