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Just had a misfire pop up in Cyl 1 last week. Car has been telling me to change the plugs for a while, but never got around to it with 60 hour work weeks. Bought new OEM Bosch plugs, not the BMW branded ones *before reading about the differences in insulator design*. Replaced all 6 today, and still getting misfires. Swapped the coils between #1 and #2, still no changes. Total drive after replacing the plugs is about a mile. Do I need to put some more drive time on the car for the ECU to adapt to the new plugs?
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