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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 > 335is DCT misfiring #6 under load custom e50 tune



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      12-15-2024, 01:53 PM   #1
e nine dee two
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misfire #6 under load/wot

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having a misfire in #6, but also wanted to check in with my

- LTFT (what is good values?)
- STFT (what is good values?)
- timing corrections
LPFP
HPFP

the car pulls strong in OTS maps but with this custom one it misfires. I also have those timing corrections, they used to be at 0, now they from time to time, alternate with higher numbers as you see. what should I check or be improved?

- spark plugs have no fuel on them
- injectors are in good working shape
- replaced boost solenoids
- replaced all vacuum lines
- no oil leaks



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      Yesterday, 12:58 PM   #2
Sgop335
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looks like the rail pressure tanked in 7th gear. Both stfts are also very negative at that time (bank2 more than bank1 tho)...an injector(s) could be flooding...
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      Yesterday, 06:47 PM   #3
e nine dee two
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Quote:
Originally Posted by Sgop335 View Post
looks like the rail pressure tanked in 7th gear. Both stfts are also very negative at that time (bank2 more than bank1 tho)...an injector(s) could be flooding...
Yes. I have #6 Firing dtc. Will replace and hopefully it should be good.

Additionally, what should STFT be at during idle and during hard acceleration, and during regular driving/cruising?

Do my LTFT look good during this log?

If you know of a thread that states this, please comment. Thanks!

Last edited by e nine dee two; Yesterday at 06:47 PM..
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