Found the problem of poor running after the map was the egr valve, it is now totally blanked off before the egr cooler with a piece of 3mm galv..... After reading up a little not to sure on either where ive blanked it off is correct, or blanking it off all together was the right idea due to the nox burning at a higher temp, hence the reason for the cooler?? on the other hand my egr is all electronic, but blanked off has thrown no eml light up...... this is a 2008 1.8 tdci duratorq engine.....
Many thanks in advance ;-)