I'm working with a E38 controller in a 2012 Z06.
I'm told that "intake manifold volume" is now available to calibrate with 3.x.
I downloaded 3.0.5 last night but I still can find it.
On another forum, it was suggested that it can be found at: Fuel > Transient > General > Manifold Volume (cm^3)
I have "Advanced" view enabled.
Under Fuel>Transient there are no more tabs, ie: no "general", and there is no "Manifold Volume (cm^3)".
I checked not only the cal files I've been using to tune, but I also checked an un-modified, stock 2012 cal file. In ether case, it's not there.