Ok, so let's put this out there again.
Start with stock cams, on a mildly built 7M. (Can be stock, if in good running order.)
Turbo needs to be at least a upgraded CT, or something in the 60-1 range would be a good idea. (Most of us are near this point anyway)
Stock springs, buckets/shims.
Before and after cams are swapped dyno runs, same AF, boost etc. (Or at least no physical changes to any of the settings, if the boost goes up, or down as a result of the cams, I'd like to see it.
Then lay the two dyno runs over each other so we can see where power is lost or gained.
Just a thought.