Help calculating my map

[zbadestz]

How do I subract barro (14.7) from map so it reads PSI. Do I have a setting incorrect? Any help is appreciated.

[killerbee]

Perhaps you need to write a custom PID, for the PID.CALC file.

[joecar]

Try the attached calc_pids.txt file, copy it to the folder My Documents\EFILive\V7.5\User Configuration.