Hi all, i spoke to my mechanic about the EGR blocking when I had my 40k service. I asked what he thought, his reply was "don't wanna know you if you do it"
He said Nissan put the EGR on the engines after the 3.0TD in the earlier D22's were melting pistons. As for the soot going into the engine, the engines are meant to get periodical carbon cleaning done on services.
I know a lot of people have done it with no dramas, but they've obviously done it for good reason so I'm gonna leave mine on. In saying that, I average 8-8.5L/100km so I'm really not complaining about effeciency, but the getting rid of the bit of boost lag woudl definitely be nice!