Thread: single wire ignition bypass connector?

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Look around, there's another hose lurking there somewhere.

I have double checked and driven myself nutz........all of the tbi ports are accounted for, as well as the EGR and MAP sensor. I don't recall pulling anything off here but it is bothering me that the vac. port is open. Should I cap it off?

I found a diagram that says it is a vent(to atmosphere for bar changes?)
http://www.autozone.com/az/cds/en_us...rInfoPages.htm

I would still like to find out the function of the bypass connector. It is not the EST wire that retards timing due to the knock sensor!