Finishing up putting my 2009 Cooper S back together after changing thermostat and coolant pipe, but I've got this mystery vacuum hose with no obvious home to plug into. Can anyone help me out with what it is an where it goes? Pic follows. Top of image is driver's side, right side is front of car. Thanks Much!

 

That looks like the transmission vent. It does not plug into anything.

 

Aight..thanx very much...that would explain why I can't remember unplugging it!