So my FD still has the OEM charcoal canister by the fuel tank, and it looks like all the tank end plumbing is still attached and functional. But somewhere along the way when the PO went single turbo, the connection from the hard pipe pictured was left open. Question is what do I plumb this to? Or can it just be left open, assuming it doesn't create a fuel stink problem?

 

i believe that goes to a second little tank under the throttle body and then to the purge solenoid on the vacuum rack.

pic is from the 2000 parts catalog, the purge mounting is different, but otherwise looks the same, and its in one drawing that is legible!