Correct me if I'm wrong, but, me thinks the iac passage originates in the throttle body inlet, via the hole in the bottom of the passage before the butterfly, then travels under the butterfly to the iac plunger, past it, then through to the big black pipe that exits from directly under the rear of the throttle body and under the upper plenum. The pipe then juts out about three inches, then does a 90° down and into the lower-most intake manifold, just to the left and above the cold start injector.
I'm thinking i could simply tie back in at the egr hole, instead of traveling all the way down to the intake manifold?