finally sorted!!

for anyone with a pre july 2001 DI, this may come in useful

i had to replace the pipe that runs from the egr valve. this has a completely new metal tube piece with one smaller hose that needs attaching going into the inlet manifold which replaces the larger original hose

finally you need the hose from a tdci model to go onto the bottom of the new egr pipe metal piece housing then onto the plastic intercooler pipe thus meaning 3 pipes to replace one

happy days