Red is original opening, green is new opening. Still will get cold air, as I did not mess with the part on the right, so it's still up against the frame. I later drilled some holes in the bottom part, like the one you can see near the right side. That one was there from the factory, I added more to make sure no water could stay in there.
Right away when I started it up, I could hear the IAC valve noise quite a bit more(vacuum noise). I'll have to give it some gas on the road and see how much of a difference I notice.