I so disagree with that. And I have a knife in a gun fight in this section.
Heres a flip side for ya.
Being a turbo needs exhaust to spin the whole system to create pressure, how much HP are you loosing to drive the turbo and create pressure.
The exhaust must be slowed down since the turbo is creating pressure and will need more pressure to drive it. Bottleing up the exhaust inorder to drive the turbo can't be good for HP. So I wonder what kind of losses are there?