Originally Posted by Blacky
There is no reason why the table has to be 2-bar, it could be 1.25 bar or 1.5 bar. It should "just work" depending on how you scale the MAP sensor using: {C6301}.
Normally for a full 2-bar setup you would adjust that scaler value until you get BARO=50kPa in the Scan Tool at Key-On.
If you wanted a 1.75 bar VE table, then you would adjust that scaler value until you get BARO=57kPa at KeyOn.
If you wanted a 1.5 bar VE table, then you would adjust that scaler value until you get BARO=66kPa at KeyOn.
If you wanted a 1.25 bar VE table, then you would adjust that scaler value until you get BARO=80kPa at KeyOn.
P.S. If any table lookup are indexed outside of the table row/colums, then the PCM uses the value from the table closest to the edge where the index went off the table.