Pipe leak @ FMIC

So, I apologise for the pic but it was sent to me by the garage (nice of them to take one I guess)

Mechanic states there is a leak at the point this pipe joins the FMIC.....covered in oil and one of the many variables adding to drop of boost/limp mode. Diagnositics did not throw anything up. From a quick feel underneath it almost feels as though the pipe is fading? What should I be searching for to replace?