im going to the smog station tomorrow, im using denatured alcohol and i want to trick my ACV valve into dumping constant air into my cat, i heard i only have to cap one vacumm line, which one?, i think theres three different ones and once i cap the ACV what happens to the other end, do i have to cap that one too????

any help is appreciated

by the way this is on a 87 Turbo II

 

the last time i did.........
errrr... umm...
I think you can just get some hose and go out the back of the air pump to the line going to the cat. don't keep it like this for too long, it will burn the cat up after long hard drives.

 

I removed the diaphragm inside it so it pumped constantly.
It's behind a cap like thing with 3 screw in a triangle shape pattern. There's a shim like piece between the cap and the acv about 3/4 a cm. That's the diaphragm. I gutted it and screwed it back together.

Permanent mod but then again. the acv was only on my car for 2 hours.