Bit of a contradiction there surely? If as you say cams manage air flow in and OUT of the engine, surely this is going to affect boost pressure, as it is air flow out of the engine that spins up the turbo .
Granted that may sound a bit wrong and i'm still learning all this stuff but surely if you've got your boost set to 23 psi no matter how much exhaust gas goes throught the turbo if the wasgate opens at 23psi then you get 23psi no matter how much exh gas is flowed?
PJay