Extremely Lean AFR, rough idle, dies....

[thedivergent03]

The other night diving home after small 15 psi boost pull in 2nd gear my 88tc started back firing out of the exhaust fairly loud. As I came to a stop the motor died, hit the key started right up. I was maybe half mile from home so i just kept driving looking over my gauges. I noticed the Afr was so lean the gauge won't even read it. When I got home I visually inspected the engine the line going from my catch can to where the pcv use to be was popped out. So I hooked it back up started the car up. Instantly AFR pegged lean, vacuum gauge now reads 5 in hg @ idle, extremely rough idle. I checked fuel pressure, fpr, pulled IC to inspect turbo and all vacuum lines. I'm at a loss to what caused this. Any help and or directions would be great. Thanks

Here is a video link of the car running. 

[Stinger]

Low vacuum and a loud hissing noise in the video. This means you've got a big vacuum leak somewhere that you need to fix. If you can't find it by listing/locating the noise then you'll have to do a pressure test so you can find it without engine noise complicating it.