The redlined hose connects to full time vacuum port on TBI, or 'T'd to a full time vacuum port. The temp sensor on the cleaner senses intake air temp and when cold the inlet door is closed.
As ambient heats up, the temp sensor senses the change and allows the door to open drawing in engine compartment air vice exhaust manifold heated air by the heat stove wrapped about the manifold.
Valve cover inlet is a grommet for the cover and a double barbed angled adapteras it pushes into the cover grommet.

thanks for the help everyone, if you come across any more information, please feel free to post it, Thanks!

Well I took my car in to have it smogged and everything worked out great, except one thing, a "functional check".
The functional check says that there is a leak in my fuel somewhere. He was doing a pressure test through the gas tank and said there was a pressure leak.

Anyone know how I can find out where the pressure leak is...... without taking it to a shop to do that gas test or w/e. ??

90 camaro rs TBI 305