Thread: N54 misfire
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      05-04-2019, 11:40 AM   #3
JM98
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Drives: 2009 135i
Join Date: May 2016
Location: SoCal

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Missfire issues are typically the easiest to avoid on this platform, but I regularly see people struggling with them. My advice to anyone buying an N54 is to immediately replace coils and plugs and start logging periodically. If you see variance in trims from bank to bank then replace all 6 injectors and code. Those three things will eliminate 99% of issues and make the N54 ownership experience much easier and enjoyable.
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