I have a question, if i have many codes from my ELM 327 OBDII, Mass sensor, Km traveled, Lambda, Temp, fuel pressure, gallons x time, engine load.... hao i can calculated these emissions?
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No, it is not possible to get true values from OBD-II ELM327.
You have to have a dedicated exhaust gas analyzer to figure that out, like this one:
But you can estimate it using a lambda sensor
Although I fear that the theoretical graph is not going to be very useful in the real world:
Zaid
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