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I had multiple misfires on my 08 335i 124k took me a month to figure it out. swapped out coils, plugs, injectors, cleaned vanos silonoids, walnut blasting, compression test. In the end I fixed the issue by swapping out both precat O2 sensors and resetting all adaptations in INPA 2x. Most of my misfires were on BANK 2. O2 sensors only good for 100k. I had no codes for 02 sensors at all. My car is totally stock for now.
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