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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Good AFR but white plugs



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      10-20-2018, 01:59 PM   #1
The_E92_Fan
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Good AFR but white plugs

I just took out all my NGK 5992 plugs and they all have a white coating on them, which indicates running lean. However all my logs put my WOT AFR between 11.8 and 12.5, and they have been consistent for months. Either its not a big deal, or my AFRs are lying and im actually running lean. Anyone ran across this issue?
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      10-20-2018, 05:51 PM   #2
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your kidding right? asking a tuning question like this with no pics of said sparkplugs?
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