I am making my own ic setup.
I need to know which holes can be blocked.
I have the two coolant passages and egr blocked on the right of this picture. What are the other three holes, top, bottom right, bottom left?
Top is pvc I believe, bottom I am not sure of them.
The probe core I have is huge and will cut into both the pcv one and the bottom left one. Can I eliminate the bottom left hole?
ZZP looks like they did.

http://www.zzperformance.com/grand_prix/products1.php?id=420&catid=139
No left bottom hole

Left bottom hole


http://www.b00t.com/soontobedeleted/gasket.jpg

I may have to cut this hole and this slit. However, I am not sure what air the slit is collecting for the pcv. It doesn't really lead to anything.
http://www.clubgp.com/newforum/tm.asp?m=3731086

let me go get my core and i'll have a look.

mine doesn't have this hole either.

The pcv holes have to be rerouted, due to the size of the probe core blocking them.
That is why the lower hole has a slit to reroute plumbing and the upper hole, well they redrilled a hole in the lim to do this reroute.

why not just block off the passages and put on a breather? seems like a much easier solution.

Supposedly harder to tune, unmetered air.

Excess unmetered air being introduced would wreak havoc on your tune.

My N* is rigged to still use PCV.
I just don't want to cause headaches.
That is why I asked what holes are what so I don't block things I need and vice versa.