Quick update on this,
Car has seemed to adapt new egr to ecu and is driving fine now and all codes have cleared, so i think i was looking into a problem which wasn't there but will let customer try it and see what happens.
Spoke to a few folk on autologic forum and there is supposed to be a software update for when you replace egr but will inform customer of this when he collects car.
I noticed oil in multi plug and this is a problem with them aswell the egr valve sticks and allows oil to feed through the motor up the harness so have clean that aswell and will keep an eye on it
Thanks for all the help