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      03-06-2013, 09:50 AM   #1
08-335
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Drives: 2008 BMW 335i coupe
Join Date: Nov 2011
Location: Chicago, IL

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misfiring in cylinder 5 w/ cobb

So last summer I had a misfiring issue in cylinder 5 when running cobb stage 2 I think v401 and I changed the spark plug and everything was working fine and now that summer is right around the corner I figured I would load the tune on for some fun and it started misfiring in cylinder 5 again.

Do you guys think this is a fuel injector issue as opposed to a spark plug issue? The new spark plugs have around 12k miles on them now.

I am going to data log tonight, since I live in the city and it just snowed here there are only a few places I can do a 2nd-3rd gear pull on with out running into some traffic.

Thanks,
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2008 BMW 335i e92-Agency Power DP's, Cobb stage 2, BMS DCI, BMW Performance Wheels
-Previously Owned-
2005 Volvo S60R (SOLD)-3.5" downpipe, 3" straight pipe all the way out, IPD custom tune, IPD Intake, AEM Methanol Injection Kit, Bell Intercooler, custom 4-guage piller pod.....best 1/4: 12.9 @ 111