if it is not done correctly you have approx 5-6 months fun driving and eventually car dies down, wont start at all;) had a customer with a so called out coded egr where egr itself werent planked out and over time it kept building up residue causing engine not start symptoms and if customer wont even tell you about that "egr delete" procedure what he let to carry out you look problem like a needle from haystack.... had several hours fun trying to find problem due lack of correct information about it but i did find the culprit. My own personal 3.0 i just replaced egr at 110k kms , now has 190k+ on clock and basically 0 problems so far only regular service and keep going, and with dpf cars it is highly recomended that you take it for longer drives also incase you live at city and do small distances.

@@KillSwitchGarage I blanked it and had phantom tuning in Bedford map it out,with a basic stage tune, who I wasn't too impressed by. 2.5 years later not a chirp.

Mine is the 2.5 diesel BTW. My point was more about nightmare Nissan diagnostics, unless you have a Consult clone,