Been searching and trying everything I can with no luck getting it to read over 105 KPA this is a 2002 5.3L with a 2 bar map SD tune. Never had a problem before with old software. Updated to the latest 4.0.6. Followed these instructions:
1. (This step for 2bar and 3bar enhancement only) Open VCM Scanner and connect to the vehicle. Open the Table display (Scan -> Table Display). Right-click the "Manifold Air Pressure (SAE)" PID and select "Delete". This removes the existing 1 bar PID from the table, if you don't do this the histogram will not function correctly.
2. (This step for 1/2/3 bar Speed Density enhancements only) Right-click the "Mass Air Flow(SAE)" PID and select "Delete". This removes the existing MAF PID, if you don't do this the histogram will not function correctly.
3. (This step for 2bar and 3bar enhancement only) Right-click again on the table display cell and select "Insert", go to the Engine -> Airflow section and choose either the "Manifold Air Pressure - 2 bar" or "Manifold Air Pressure - 3 bar" PID, double-click to insert it into the table.
Not sure if I'm doing something wrong. Attached is the Channels.xml I did this for 6-9-18 malibu 2018.Channels.xml
The MAP - 2 Bar reads 0 all the time and the regular map reads correct but only to 105 KPA
Thanks for the help