Originally posted by DemonSVT:
Competely different principle.
Suck & Blow comes to mind as a simple reason why... 
Plus laminar flow disturbances are by objects actually IN the path of flow. The stock center bar MAF is a perfect example. (Pro-M MAF's have side horned MAF filaments)
The setup of "largest" filter to "larger" MAF to "large" TB to upper intake manifold (2 part manifold with dual runners whose surface area is larger than the intake opening!) would naturally accelerate the incoming intake charge. Venturi principle.
So the thinking is off...
Also ram air (true ram air - not the psuedo crap labeled ram air today) causes low rpm stalling and would not produce a noticable boost in intake pressure until above highway speeds. You are much better off with a fresh air supply over a sealed ram air setup!not saying these type of things don't matter... but for a street application aren't we just splitting hairs. anything making under 300fwhp isn't going to see any benifit from this.
