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      02-16-2020, 02:55 PM   #8
HLJustin
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Drives: 2017 Alpine White 340i
Join Date: Sep 2015
Location: SF

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Quote:
Originally Posted by jbb2388 View Post
Quote:
Originally Posted by HLJustin View Post
I've been running Mission Performance since about 18,000mi


What stage?
Stage 2

Quote:
Originally Posted by B58togo View Post
Surprised you weren't misfiring way before 45K on original plugs.
I honestly might have been. Still new to all of this and getting to know my car better. Car did have a real rough idle occasionally and had a few times last few months where power and rpm stumbles for half a second at lower speeds. Never had a CEL tho, I'd assume a misfire would trigger CEL? Or only after it's a constant issue?