what this pipe for

[1688bran]

http://s222.photobucket.com/albums/dd287/turbo-888/?action=view&current=DSC07675.jpg
http://s222.photobucket.com/albums/dd287/turbo-888/?action=view&current=DSC07676.jpg

i recently changed the standard airbo to a bmc carbon airbox which was fitted by the garage ,when i got home opened the bonnet and saw this pipe hanging about not connected up to anything ,i want to know what this pipe is for ..... i had a good look at the new airbox but i cant see there is any connection to conect it up .......