Plug it or ?
Reply #3 –
I just removed the air pump on my 85 v6 stang, plug the hole on the back of the manifold (I just cut off the top and welded it solid) and the hose going to the cat (large allen head bolt and hose clamp) and two vacspoogee lines went around the engine bay behind the overflow, plugged those too and car still runs the same as before I emoved it.
Now maybe someone will clarify if both systems are the same...