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To regen it needs a certain soot level and a warm engine, warm underhood, or about 35 miles. A Vagcom obd/cpu analyzer can give you the soot load. If the fans run on shutdown, you may or may not have completed the regen. The fans indicate it is over 160 degrees under the hood and you are cooking rubber components hence the burning rubber smell.
If you are running on cruise control, on the highway, you'll might not know you are cycling. Otherwise, Throttle gets boggy, there is hesitation, engine feels rough and noisy, and eventually you lose mileage from the fuel dump.
Regen pre-fix was about once every 100miles. It now occurs every 50, or for me, every other day. If it doesn't make you crazy, be thankful.
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casual notes from the underground:There are some "experts" out there that in reality don't have a clue as to what they are doing.
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