Somebody on XO did a complicated trick to make the diff pressure sensor read just the right amount to allow the DPF to regenerate but still haven't found the thread. Will post a link if and when I find it.

EDIT: It was Zeta Tre in this thread:

https://xoutpost.com/bmw-sav-forums/...-diy-pics.html

He said this:

"""As I stated elsewhere this whole thing started after my dad has been battling with failed glowplugs and clogged DPF. The root cause of it all was the engine not maintaining normal operating temperature (defined as >75C) resulting in running in warmup mode (i.e. overfueling and glow plugs under light to medium load) and failing to carry out regular DPF regen. Restarting the regen was a bit more tricky since it required fooling the DDE in reading lower backpressure which we resolved using the hose with a slit."""

He described the process more extensively elsewhere but I couldn't find that thread.

__________________
2003 4.4i black ext./black int./black headliner (kid's runabout)
2014 535d X-drive, M package, silver/black interior

Sold but not forgotten:
2009 E70 35d, black ext./black int./black headliner (sold 2021)
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD in 2012 sadly...

Other hardware:
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler
2005 Tundra crew cab, weekend hauler. Sold after 150k very happy miles.