Whats this, where can i get one?

Hi, few questions regarding a black pipe which split on my 03 plate TD4 freelander on my recent trip to lake district. I've attached a pic because its easier than trying to describe it.
Basically i was going up a very steep pass when i noticed loads of thick black smoke pooring out the exhasue. I pulled over to notice a split in the pipe which i'm pointing at in pic, bit of oil seemed to have come out too. i didn't know what the pipe is but guessing its something to do with the turbo, also i figured a split pipe cant be good so using a role of insulating tape i fixed it which seems to still be holding fine even after a 4 hour blast down motor way to get home.
Anyway- i'm wondering what the pipe is called so i can get a new one, any suggestions where from would be much appriciated too? also just wondering why the split in the pipe caused the black smoke??
any ideas anyone? Thanks, chris.

the bit your pointing to is the intercooler hose part no wap000080 hope this helps

if tincan is right on the description ,you could get it here WAP000080 PIPE EGR | shop | www.lrseries.com | L. R. Series .