[Danwrx]

Does anyone else have a hose under the intercooler (passenger side) the doesn't connect to anything? When I was doing my clutch I noticed this hose about the size of the hose that comes from the dump valve and it doesn't connect to anything! Since I have done the clutch the car has been running a little lumpy and engine management light is on but I've only used it twice since so I put it down to not being run for a month. Now I'm beginning to wonder if this hose is something to do with it or is it just a breather?
Thanks in advance for any replies