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Dhillon92 Dhillon92 is offline
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Posts: 92
Join Date: Jan 2015
Car: '11 335i MT
Default Misfiring? Stutter under boost, log included - 08-08-2020, 05:42 PM

hey, ive been dealing with an issue creeping up on me recently: cold starts start cold and then get real quiet, and when this happens, the car doesnt wanna go past 4k-ish rpm in any gear under full throttle.

Its intermittent, no codes, i finally caught it in a log today in second gear (MT), and then tried to get one more log of it and it pulled just fine, literally seconds after.

Problematic log and OK log both attached.

https://***********/u/dhillon92/4k-r...data=3-8-11-12

Only thing I can see is my AFR in the 11s, which i havent before, and also heavy timing drops on cyl1 data (?)

Appreciate all the help, thanks!

Edit: FBO MHD custom tune by twisted tuning (same tune for past couple years, no issues)
Attached Files
File Type: csv Problem log.csv (10.0 KB, 5 views)
File Type: csv OK log.csv (26.8 KB, 5 views)


N55 FBO + Meth

Last edited by Dhillon92; 08-09-2020 at 08:05 AM..
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inevitab1e's Avatar
inevitab1e inevitab1e is offline
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Car: 2013 N55 135is
Default 08-09-2020, 06:52 AM

You'll need to update your logs. Says they're invalid.


2013 E82 135is N55 JB4-BEF FBO
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Dhillon92 Dhillon92 is offline
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Posts: 92
Join Date: Jan 2015
Car: '11 335i MT
Default 08-09-2020, 08:00 AM

Quote:
Originally Posted by inevitab1e
You'll need to update your logs. Says they're invalid.
Thanks for the heads up, how can i update them? Ill try reattaching them in this post. Also i see my data z a p link got blocked, my names Dhillon92 on there as well

Sorry forgot to add, im on an mhd custom tune now, no meth (old sig)
Attached Files
File Type: csv Problem log.csv (10.0 KB, 3 views)
File Type: csv OK log.csv (26.8 KB, 2 views)


N55 FBO + Meth
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