I took both rubber pipes off, one from the EGR that runs down and also the one that connects to the intercooler behind the front bumper, both pipes look almost new no oil or residue on the outer. Inside of the pipes are wet with oily residue so would expect some to have seeped out any holes or cuts but none has, the metal pipe that connects the 2 rubber hoses also looks fine, I've made sure all the jubilee clips are secured properly and the inter cooler also looks new, nothing appears to be leaking from there. Are there any other problems that the symptoms could be pointing towards. Fauty EGR? I believe they can be blanked off and makes no difference to emission tests here in the UK, is this correct? Thanks again Stuart