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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > N57 exhaust pipes always coated with soot



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      09-20-2024, 05:36 AM   #1
izewat
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N57 exhaust pipes always coated with soot

I have a 2010 e92 with the n57. The previous owner said that the car is stock to her knowledge other than an ECU remap. I have only recently started to notice a large amount of soot on the exhaust pipes. Is this normal or has there been other modifications done to the car. At the time of taking the attached photos, all I had done to the car is removal of the rear silencer for a hollow pipe, which is why it has caught my attention. The car does have quite a whistle when driving normally as well as a fairly loud compressor surge when lifting off the throttle over 2k. Also I’ve been told there is a small amount of black smoke out the tailpipes when full throttle. (The photos were taken less than a day apart)
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      09-20-2024, 09:54 AM   #2
Nadir Point
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My exhaust tips look like 2 black spots on back of the car from 30 feet away. DPF's probably still there. Full, by the looks of it.
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      09-26-2024, 11:10 AM   #3
izewat
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Nevermind, I now know why. There is a square on the side of the dpf which has been welded back on haha
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