Just bought a new car with an LO3 intake, and I am doing some repairs. I see the EGR vac line was disconnected from the car. Since I am trouble shooting I need to hook this back up. The Diagram on the hood appears to show that it should hook strait to the TB. I am not finding a port that it should plug up to. Is there one, or is the diagram mis-leading and it T's off from something else?

 

should be 4 ports on the TB. one on the back facing distributor for map sensor, 3 up front one for egr(passenger side), PVC (bigger one in the middle) and Purge canister (drivers side). the egr should have a hard plastic line that is pre-bent to take the shape of were it should connect too. but yes the egr is directly connected to the TB no T'ing off. maybe someone before you changed the TB with the wrong one so they left the egr disconnected?

 

Did some searching on here and came up with same diagram as on the hood(not factory hood).

I have so many vac lines.. 2 to perge canister area, 2 to hvac, map, pvc, egr, aircleaner. I think 1 more, and I'd like to have a piller pod vac guage too.

The diagram does not show any HVAC hooking up to the TB. And some of these pre-bent lines have been routed to what I guess is the wrong stuff and are no longer shapped right. The TB has just as many ports as the diagram shows, but as I said, no HVAC hooking up to it. Where does it get vac? Why 2 Perge canister lines?

Anyone have some high res pictures of a stock setup they could email me?

 

Take a look at the LT1 cam digest in the stickies above. There should be a picture of the stock TBI unit with all of the vacuum lines labeled accordingly.

 

I took a look at that, and that is same as diagram on the hood as well.

I guess I'm having problems with where/how the accessorys like cruise and hvac should be hooked up. What do they tap into?