Hose ID and Connection Question

[nicfranc]

[Pazuzu]

Vacuum line.

It doesn't go anywhere, because the 1980 version doesn't HAVE a vacuum line there!

Someone swapped a different WUR into your car at some point. I don't know enough to know whether it's an earlier or a later one.

For now, try to connect that to vacuum somewhere.

[nicfranc]

I was looking through my Bentley and Wayne's books and could not figure it out.
I found it just laying in the engine bay tangled with some other hoses.

Car runs fine but I am trying to replace dried out hoses and eliminate anything I might not need.

Do I need a WUR ?
I do not drive the car in the winter. April thru October

I would like to delete the fresh air fan and get the engine compartment cleaned up.

What else can I ditch ?

I am keeping the AC because it actually works. Not that I use it much.
I prefer to go topless.

Thanks for throwing an eyeball on the mystery.

[nicfranc]

I have done some extensive reading and it appears it is a vent and does not have to be connected to anything. Supposed to keep out debris from the port.
That is peculiar.

Since I do not drive the car in the cold can the WUR be eliminated ?
It is not working.
I have to warm up the car before it will idle but i am ok with that I just start out driving easy and in 5 minutes it idles perfectly.

I want to delete all non essential components.

I started by removing the CAT and stock muffler and the car runs much better for it.
O2 sensor has also been removed.