When I was putting in my sister's new head, amp and subs yesterday I must have knock a vacuum hose (if that's what it is) loose while attaching the power wire to the battery. Now when I start the car the engine turns over but I hear a psssh noise and a grinding noise. Here are some pictures of what I think I knocked loose. It was late so I didn't want to work on it any more. The loose hose comes from a black box right above the trasmission where it's tied together with three other hoses. Any thoughts? Thanks!!!

 

Thanks for all the replies but I figured out what was wrong. The vacuum wasn't what was wrong. Running good now.