E30 Mystery hose- where does it go

[Rainman43]

Hi, I recently tuned up my 1990 325i, and removed the intake manifold to clean it, and all the nearby hoses, etc.
After reconnecting almost everything, I had one hose left, and could not find where to connect it.
A photo is attached. The hose starts on the Charcoal canister, and runs up toward the throttle body.
The photo shows the hose plugged with a bolt. The car runs fine as is. Any suggestions?

[whodwho]

There is a big brass nipple coming off the bottom of the throttle body pointing straight down towards it

Edit - here is a good pic of where it goes

https://www.r3vlimited.com/board/for...08#post6794008

[Rainman43]

Whodwho: Thanks, you are right! Once I mounted the Throttle body, the electric box underneath it blocked my view of the brass fitting.
I had to remove the throttle body to access that fitting, and attach the hose from the charcoal canister. It's al buttoned up now, running
100%. Thanks again. Ray