Well, I just had to do it. Found out it looks like the PO had tried to remove the EGR. One of the bolts to the exhaust flange was rounded off inside, and the two yellow pipes had been unplugged and capped off, at the solenoids. Looks like he gave up and left the old EGR in situ. Had to use a set of reverse spiral bolt sockets to grip the rounded off nut, and it easily came out. All removed now.
Is it good practice to take the plugs off the solenoids? or just leave it connected up....Does it make a difference. Be nice to rip out all that redundant kit, and leave it tidied up. I made get the none EGR pipe, and do it properly. What happens to the pipe that goes to the air box, just rip it out ? Does it need blanking off at the spout on the airbox ?