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Originally Posted by kbsilver
Just brought the D in for the EGR recall. I specifically asked about the soot near the turbos and it was written on the worksheet. Answer was "Spots are caused by soot and is a normal condition". Well, that was real helpful.
I have a 2011 so the recall was just EGR replacement and DME software update. Best I can tell in 40 miles of driving the car seems exactly the same. Some of the presets along with trip computer info is lost in the update.
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Thanks kbsilver! As far as i know you are the first owner to verify this with a BMW service technician.
Few weeks back I had a chance to inspect another 335d and it was exactly the same. Also many other owners observe the same build up as well:
http://www.bimmerfest.com/forums/sho...d.php?t=616968
So this is obviously normal. Also I can verify that this has nothing to do with the recent recalls as my car is one of the last cars that was produced and not part of the recall.
Basically this is just a curiosity at this point
nothing to worry about.