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      02-14-2020, 11:40 PM   #1
HLJustin
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Drives: 2017 Alpine White 340i
Join Date: Sep 2015
Location: SF

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340i Spark Plugs (45,860mi)

Just changed out stock spark plugs for NGK 94201 and gapped to .022 for tune. Super easy to do and I took my time.

Car History:
Stock: 3500mi
MPPSK: 3500-18,000mi
MP Stage 2: 18k-now

First time changing sparks so no idea what's a good or bad spark, but thought I'd put a picture up for you all to let me know. Checked all stock plugs were gapped to .030 with 5th one about .031 not sure how others found wild range of gaps in their stock plugs.

Left to right is 1-6 going front to back. Single picture is of 3 that looked "darker" compared to rest. What you all think? Didn't need to change? Clean sparks? Or somethings wrong?
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