Okay so I have blocked off the EGR and ACV and a couple other things that dosen't have to do with my question. But I did not remove the pipe that goes from the rear of the LIM to the main cat...or where it would connect to the main cat. Now, does that mean that air is flowing straight through their? Or is nothing going to come out?

 

If your ACV is blocked off, then nothing is going in or out of that pipe.


[edit]Don't forget to unplug (the grey w/ orange insert electrical connector) or eliminate your airpump. If you let it run while it is blocked off, then it will sieze up.

 

I removed the air pump. So no air is being fed throught that pipe that is connected to the rear of the LIM?

 

Right, because the inlet for that pipe is controlled by the ACV. The details of the ACV start on page F-115 of the FSM.