In an effort to try to understand and learn all of this as best I can, I have the operating characteristics for the Omni 2.5 bar MAP sensor here:
and the Voltage Output/Absolute Pressure Scale for it here:
And here I have my MAP sensor values entered into the Pro ECU ROM file maps, labeled:
A) MAP Sensor Scaling - Pressure Offset = 0.100 bar
B) MAP Sensor Scaling - Voltage Multiplier = 0.500 bar/volt
C) MAP Sensor Voltage Max (for the DTC P0108 to activate) = 4.896 volts
D) P0068 MAP Sensor Voltage Maximum (for the DTC P0068 to activate) = 3.30(?) volts
E) MAP Sensor Voltage Min (for the DTC P0107 to activate) = 0.204 volts
F) P0069 MAP Sensor Voltage Minimum (for the DTC P0069 to activate) = 1.25(?) volts
Here are my questions:
1) So according to the manufacturer's supplied data, do all of my settings concerning
A, B, C, and
E look correct?
I realize that I should never get above the maximum voltage of 4.896 to throw a P0108 diagnostic code, nor should I ever get below the minimum voltage of .204 to throw a P0107 diagnostic code with my current or future setup (unless the sensor fails).
If all of those values for
A, B, C and
E entered above are correct, then:
2) Where would I set the values for
D and
F if I will be running at an absolute pressure between 20 kPa and 100 kPa for a naturally aspirated application to keep from throwing either a P0068 or P0069 diagnostic code? (I have the values for
D and
F set at their defaults for the OEM sensor, I have not made any changes to those two values.)
3) Where would I set the values for
D and
F if I will be running between 20 kPa and 185 kPa for about 12 psig (26.5 psia) of boost to keep from throwing either a P0068 or P0069 diagnostic code? (Again, both are still set to their OEM default values.)
I realize that it can be figured out, but I don't know what values should be plugged into what formula to get the correct results.
4) Other than because @
steve99 stated that is what the value should be, where is this value for
A) derived from?
5) And for the same reason as stated in question #4 above, where is the value for
B) derived from?
Sorry for all the questions, but if I can learn and understand what it is that I'm doing, the better off I'll be in the long run and won't have to ask again.