Does anyone have a reference table for the factory MAP sensor?

I am using the built-in Haltech MAP sensor, and would like to re-purpose the factory 2 bar MAP sensor as a barometric pressure sensor, but I can't seem to find any calibration data on it

 

I'm not sure how Haltech needs the sensor scaling info, but my AEM Infinity ECU calibration shows min volts 0.76V represents 0kPa, and max volts 4.85V is 219 kPa.

 

You can build a calibration table yourself with a multimeter and a vacuum/pressure pump.

 

Thank you! That puts ambient pressure within a few kPA of the built in Haltech sensor