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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > 30ED & 30EF Codes - FBO N54



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      11-12-2021, 11:51 PM   #1
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30ED & 30EF Codes - FBO N54

Hi all,

I have a FBO n54, and car is running really rough now with misfires.




Car has new coils but not plugs, running index 8 & 9 injectors.

Where should I start?
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      11-13-2021, 12:31 AM   #2
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Quote:
Originally Posted by umr View Post
Hi all,

I have a FBO n54, and car is running really rough now with misfires.




Car has new coils but not plugs, running index 8 & 9 injectors.

Where should I start?
Logs?
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      11-13-2021, 12:34 AM   #3
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Originally Posted by GovernUrMental View Post
Logs?
I really don't want to run the car in this state right now with superknock codes. Would it be a wise idea to get logs?
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      11-13-2021, 12:59 AM   #4
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Quote:
Originally Posted by umr View Post
I really don't want to run the car in this state right now with superknock codes. Would it be a wise idea to get logs?
No worries thought you may have had some already. How long have you ran the v9 map?

Does it idle and cruise normal?
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      11-13-2021, 02:05 AM   #5
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Quote:
Originally Posted by GovernUrMental View Post
Quote:
Originally Posted by umr View Post
I really don't want to run the car in this state right now with superknock codes. Would it be a wise idea to get logs?
No worries thought you may have had some already. How long have you ran the v9 map?

Does it idle and cruise normal?
I've been running the v9 map since it came out, about a month or so I think.

It doesn't idle or cruise normal, heaps of misfires on idle and cruise, a lot when accelerating.

It started off as just misfiring on cold starts for about 30 seconds or so, and then started doing it when idling.
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      11-13-2021, 09:44 AM   #6
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Bad injectors can cause super-knock fault codes.
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      11-15-2021, 12:57 PM   #7
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Quote:
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Bad injectors can cause super-knock fault codes.
+1. Especially if it started with cold starts.

Pull plugs, bet you 1 & 3 and/or surrounding plugs are blacked out.
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