Can you add columns to VE tuning map?

[67SS509]

Changed everthing to imperial to eliminate mistakes and had to add extra columns on the ben map (rpm vs psiHg). I extended the columns to 23.6 to catch all the data. Now this will not match my VE map when I want to paste and multiply. The columns on it only go to 15.2. Can my manifold pressure be this low with a big cam? Or is my understanding wrong? PID units are set to imperial also.

[mr.prick]

Are you using a 2 Bar MAP?

[67SS509]

Just the stock one which I assume is 1 bar.

[mr.prick]

How will you get more than 15.2psi from a 1 Bar?
If the MAP is maxed, go COS.