Injector Scaling issue (offset vs voltage)

I'm not sure if this has been asked, i've searched and didn't find anything related.

So when i go to VCM editor and i want to start scaling for bigger injectors, I get to where I need to edit my Offset vs volts vs VAC... but on MY tune in VCM editor it only has Offset vs Volts vs MAP. My injector data sheet does not have this. So what am I to do?

I've looked at other tunes and some have the offset vs volts vs vac. Why is mine different? This is a E38 for a C6 Z06. I've looked at other E38 and they have the option.

Am i overlooking something? Thanks.Attachment 87076 Attachment 87077