Gm gen 5 virtual VE histogram not working

Hello, im having trouble setting up histograms for virtual VE on two cars: one is a 2021 camaro zl1 and the other a 2017 corvette z06.

My problem is because these cars uses pressure ratio for the row axis and when i try to set it up it won't move from row 1. I already tried using many different options for pressure ratio on the vcm scanner, as well doing math parameters and the problem still the same.

I looked for some info on many other forums for so many time, i also wrote an email to hptuners and nothing.

I attached some pictures, and logs from both cars so you guys can try to get it work. Thanks in advance!

I'm going to guess that perhaps your Pressure Ratio calculation is not correct. Here is what I would use, which would put the results in % (so a ratio of .20 is 20%, and a ratio of 1.4 is 140%). Did you make sure the units of the selected channels were correct. I made sure both were in PSI (Baro defaulted to pascals for me -- your note of divide by 1000 was a clue that perhaps you were using that). Anyway, here is a math channel you should be able to import in to VCM scanner.

I tried it with your math channel and it didn't work :(

Did you try changing the axis from 0% - 450%. Since 450% is your lowest value, everything less that 50psi boost will fall into that row. If you graph the MAP/BAP, what values does the graph show in your log?

In your first post, the VE table only went from 45% to 86% -- perhaps that's what you should use as the range.

You are absolutely right. And now that you said that I tried with my pressure ratio calculation and it worked. The problem was the axis that I only copied and pasted it. Now my question is why in stock form Gm has 0.450 pressure ratio as the minimum for that table. But anyway, thank you so much, I was looking for a solution for a long time and the last thing I was going to think about was the axle.

Do you have any social media?

Perhaps they are OK with whatever values are in the .45 row being used for all values below that (this is an area the engine is basically in idle/overrun, and never making any power).

I'm all out of social media, all I have is curmudgeonly banter...