Oil in intake?

[curtis265]

Since we're on this topic... Can someone explain to me why i have 2 hoses going from the valve cover to the intake system?

One has a PCV valve toward the right of the VC going to the intake manifold
one doesn't and connects to the intake arm right before the butterfly valve

Whats the science behind this power increase? Less pressure below the piston rings in the crankcase affecting adversely affecting performance?

also would like to know