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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 > ghost misfire under acceleration- log attached



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      10-03-2024, 03:45 PM   #1
tsmoove24
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ghost misfire under acceleration- log attached

the 6 weeks my car(2009 335xi-6 speed manual-msd81 dme-77000 miles) has been misfiring under moderate acceleration with no codes. car just jerks a bit 3-4 times during a hard pull in 2nd and 3rd gear from 2500-4500 rpm.

i've posted about it previously and all details are on my first post if interested.
i've gotten new plugs, coil packs , index 12 injectors( bought used but flow tested and i believe they are solid), have done an intake valve cleaning all with no luck.
i just compression tested the car today and all 6 cylinders were within 170-180 psi.
i just got my mhd moniter and did a log yesterday and the car did seem to miss a couple times during my third gear pull.
to me the log looks relatively normal except for the timing corrections.
does anyone see anything else concerning or have a reason for the timing corrections?
motor is bone stock and is always run with 93 octane fuel.
log is attached, any help is greatly appreciated as this misfire has me beat
https://datazap.me/u/tyolsen24/log-1...=3-11-20-21-22
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      10-03-2024, 07:16 PM   #2
Sgop335
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Did you have misfires in that log?
Log Shows super lean but only during shift
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      10-04-2024, 09:16 AM   #3
tsmoove24
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Quote:
Originally Posted by Sgop335 View Post
Did you have misfires in that log?
Log Shows super lean but only during shift
I believe it kicked about 3-4 times during the pull. definitely want to get more logs soon and try and remember the exact rpm that the misses are happening.
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