It has nothing to do with books, it has to do with your lack of understanding of fluid flow.
Why not ask Mike if he'd drive it with the screamer pipe venting downward.
Not to mention that there should be NO flow through the pipe other than during shifts or overboost conditions, but I guess you've overlooked this or have a really shitty boost controller.
For someone with seemingly very little DEEP technical knowledge, you certainly do like to spew more than your share of bullshit.