un-clip/un-bolt everything of the old egr, remove this from the inlet manifold and leave the flexi-metal pipe from the turbo/manifold! then get a small spanner on the two bolts that come from the turbo/manifold best trying from the air box side removing the plastic tubing that goes to your turbo intake pipe, once get that metal flexi pipe off put the wee gasket and cover plate on! also wd-40 them before you do it and i got more purchase from that side off the bay mate! they are quite stiff so do try hard mate.
Euan