Had to check because I wasnt sure.. it goes in the side of my air filter.. looks like its been drilled through then sealed with a bung ! I will probably go back stock as soon as I see one going at a good price
That should be fine for the time being. Going back to stock is a good idea, to avoid manifold icing issues.
The annoying bit is that the hose was routed into the carb by a VW garage . If you want something doing!