u/Elderlymisanthrope

Purely hypothetically, given that removal of said is illegal. If a 651 engine had had this done at 50k miles and then driven for a further 40k over a period of years by someone with a laughably light right foot and a meticulous attitude to servicing and maintenance would you consider this a positive?

Assuming you know the car, the workshop and the owner intimately and there is no doubt that the above is true.

Mild power bump to 500nm. 220cdi 2013 vintage, European Market version.

I have never owned or worked on a diesel and egr, adblue and dpf disgust me. Feeding an engine it's own farts is an affront to the laws of god and man.

Am I wrong to think the engine is happier without them?