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Stukka89 Stukka89 is offline
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Default Logs for b58 JB4 - 03-11-2021, 06:33 PM

Please bare with my ignorance here, I am a complete newb to forums, so if I am posting in the wrong place or asking questions that have been answered other threads please have some patience

I would like to make and post some logs for my M340i but was first wanting to know if there was a specific or preferred way to do them that is most ideal for review?

thanks in advance
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Default 03-12-2021, 10:07 AM

You're good.

Yes, take the log in 3rd or 4th gear at wide open throttle from 2k to redline.



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Default 03-12-2021, 08:35 PM

Awesome, thank you for the response.
When I get them would you like them just posted here or make separate thread?
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Default 03-15-2021, 09:53 AM

Just post them here...



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Default Please review - 04-01-2021, 07:11 PM

Map 3 and 4 logs with 95 octane. 3rd gear pulls on both
Attached Files
File Type: csv P58_M3_R1_210401_191832.csv (6.8 KB, 30 views)
File Type: csv P58_M4_R1_210401_191744.csv (6.3 KB, 22 views)
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Default 04-02-2021, 10:24 AM

Minor timing corrections on both maps but looks pretty normal.



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Default 04-03-2021, 07:05 AM

Im new to the jb4 as well so trying to understand before I do experimenting on my own car.

Does his map 4 logs show throttle closures and timing/boost reduction? It looks like map 3 had more advanced ignition, more boost, and 100% throttle through the entire pull?
What would this be due to? I don't see a column for knock value
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Default 04-07-2021, 03:58 AM

Quote:
Im new to the jb4 as well so trying to understand before I do experimenting on my own car.

Does his map 4 logs show throttle closures and timing/boost reduction? It looks like map 3 had more advanced ignition, more boost, and 100% throttle through the entire pull?
What would this be due to? I don't see a column for knock value
did you use the app on your JB4?


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Default 04-12-2021, 07:10 PM

yes I did
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Default E30 logs. please review - 04-12-2021, 07:14 PM

map 4 and 5 runs in 3rd gear. E30 mix with 93oct.
also a screenshot of codes

118001: mixture ECU. mixture too lean
118602: lambda probe before catalyst mixture fine control. exhaust too lean after catalyst
12b701: lambda probe heating after catalytic converter, function: internal resistance too high
Attached Files
File Type: csv P58_M5_R1_210412_165906.csv (12.5 KB, 17 views)
File Type: csv P58_M4_R1_210412_164952.csv (6.0 KB, 17 views)

Last edited by Stukka89; 04-13-2021 at 04:13 AM.. Reason: photo won't load codes
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Default 04-13-2021, 08:22 AM

Not too uncommon for those codes when running E85 mixes, Kind of odd for E30 though, are you sure your mix is correct?

Map 4 is clean, map 5 just had a couple minor corrections up top.



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Default 04-13-2021, 10:41 AM

per your BMS fuel analyzer kit, it shows an ethanol content of 30
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Default 04-13-2021, 10:46 AM

Logs look good. Lamba codes are not normal though on E30. Only a mixture code and that is usually around E40. Maybe an o2 sensor is damaged?


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Default 04-13-2021, 04:51 PM

I'll look into it. Thanks for the replies.
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Default 04-14-2021, 10:25 AM

Then I'd clear the code and see if/when it returns. It's likely at idle of cruise but that's typically E40+ you see that.



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Default Map 4 and 5 logs with E40-E45. - 04-26-2021, 07:16 PM

5 felt pretty good but please take a look. Left DWG at default (0)
Same codes still apparent from previous post.
Attached Files
File Type: csv P58_M4_R1_210425_185612.csv (8.8 KB, 8 views)
File Type: csv P58_M5_R1_210425_185727.csv (9.6 KB, 8 views)
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Default 04-27-2021, 10:48 AM

Trims are maxing out and forcing you lean, I'd lower the ethanol content.



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Default 04-27-2021, 06:18 PM

Good to know. Thank you sir
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Default 04-27-2021, 06:37 PM

Would an uprated fuel pump solve that issue? If so, does the supra pump have higher FF than a 21 M340i?
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Default 04-28-2021, 09:11 AM

No...that's a function of the ECU and it would need to be flashed or you need to lower your ethanol content.



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Default 04-28-2021, 06:36 PM

Got it. Thank you for the info Steve
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