WTFFFF is wrong with this BMW??
The 335d uses piezo injectors, there are good reasons why just about everybody is sticking with solenoids nowadays. The regular m57 is pretty decent - for a common rail turbodiesel. Injectors, glow plugs, turbo, high pressure fuel pump (rare on these), DPF if it's burning oil and/or is using non low-SAPS oil, occasional cleaning of airways, you'd better not use it for short trips.
Re: "emissions crap" - I wonder what your PoV would be if you lived in a place where every other car is like that.
Since my DPF and SCR are still intact, all of that soot that EGR would have injected back into the intake manifold is scrubbed out just like the rest of the exhaust. I would feel no different if everyone else in the world did what I have done. The air would be just that tiny bit cleaner.
Last edited by geko29; Feb 24, 2023 at 11:14 AM.
Soot by itself is pretty easily handled with a particulate filter - again, assuming that the car is driven properly (a.k.a. no short trip city diesel BS).
The M57 should sound like a tractor (mine has since new), but it shouldn't smoke. A rattling noise is most likely to be a loose heat shield. If there were a recording, I might be able to provide some insight. But I think OP bought his phone before video was invented.

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my iphone 5S camera before that though got screwed up when a bit of water found its way into the lens and made every pic look smudged
my iphone 5S camera before that though got screwed up when a bit of water found its way into the lens and made every pic look smudged











