Don't our cars have auto recirc function? I've only heard that the diesel stink is unbearable on a cold start in summer with the windows open, but I think leaving recirc in the auto function would help -

Also, get a diesel catalyst on the midpipe, don't just do a straight pipe, it will help the stink, but it won't eliminate it completely - but will be worlds better than a total straight pipe from turbo on back.

You'll have a bit more soot but most vehicles even with deletes and tunes don't push out much soot on common rails - soot is also NOT associated with NOX, as you actually produce less NOX with more soot (and vice versa), its all dependent on load, tune, etc -

My wifes is at 45k miles and the SCR cat took a dump and both NOX sensors and the urea tanks have both been replaced already. Thank God its under warranty and I know they aren't dieselgate cars but for fucks sake if BMW thinks I'm going to have all these parts replaced every 40k miles and start paying for it out of warranty they have another thing coming.

EPA standards are supposed to be 10y/120k miles on emissions components from what I remember from my Dieselgate days.

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2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards