Help! Can you name this part?!

[beyondweb]

This part runs between the two exhaust mainfolds. What exactly is it? There are two places for tubing to run somewhere up near the black cap. Where do they go?

I didn't take it off so I don't know how it goes back on. It was given to me in a box with other misc. parts when I bought the car.

Any help is appreciated! I'm in Cali and am trying to work fast to get this smogged in time.

[funkymarcus]

That would be the connection from the exhaust manifolds to the secondary air injection pump. The piece with the black cap is the air injection valve. The larger rear-facing tube connects to the pressure (output) line from the pump. The smaller front-facing tube runs over toward the left side of the engine and connects to the intake manifold adjacent to its air intake.

[beyondweb]

Got it! Thanks for the info!

Now, let me just try to put it back on... This should be interesting!