well, the rats nest is gone (S5 TII), but after staring at vacuum and fuel diagrams I'm left with a few lines that I know should be attached somewhere. The ones i'm confused on is the line from the charcoal canister, the nipple on the center housing, and the small tube on the oil fill neck. where should they go?

 

not sure if it's the same as the s4 but on mine i removed the charcoal canister. the nipple on the center housing was plumbed into the check valve on the tid and the small tube on the oil filler is capped off

 

I would just take off the charchole canister. Some people say your car will smell like gas when it's parked, but mine doesn't smell at all.

As for the line on the oil filler neck you can block it off or leave it open. Just make sure you don't block off the "crank case" vent line too. You must leave atleast one line open, or your car will smoke like crazy.