I know I know, if it ain't broke, don't fix it. I'm just more curious more than anything. I'm trying to experiment with re routing some vacuum lines and making the most simple intake. Just a bare bones type of thing.
I've got some questions though...

1)
is the air regulator actually needed?
All it does is high idle to warm the motor up faster, right?

2)
Does the Pcv line that comes from the Valve cover need vacuum?
I know a lot of people just put those little filter things on there and call it even, but I'm wondering if there would be any gain to re-routing it to the manifold so it has vacuum. Would it need a check valve like the lower assembly has?

3)
The IACV isn't needed to idle, right?
The motor idles on its own and the IACV just compensates for added load, like the AC compressor cycling, or the power steering pump. I've seen guys disable, and/or remove the IACV and still power steering. The motor would bog down when you turned but it never died. The catch is, they never had a/c. Would the compressor cycling on and off create that much extra load?
Would you be able to compensate for not having an IACV but upping the idle a little bit? Which is my next qustion. I was told the only way to adjust the idle is by adjusting the IACV. Is that the only way? Other than just keeping the throttle plate open, is there any other way to adjust the idle?



Thanks for the assistance!