[vcx]

Hello guys!

Those are my first logs ever. I am a complete noob.

Car is a 2017 340xi 6MT MPPSK, with MG Flasher Stage 1 (map v.2.16)

Logs were performed in 3rd gear, DSC off.

First is with stage 1 91oct./95 RON map, using 98 RON fuel.

https://datazap.me/u/vcx/log-1640451256?log=1&data=16

To me it looks ok. Any thought ?


Second is with stage 1 93oct/98 RON map, with 98 RON fuel:

https://datazap.me/u/vcx/log-1640451256?log=0&data=16

IMO there are too many timing corrections, fuel must be crappy, or is there another problem?

Thank you so much for your help!

[T_H_O_M_A_S]

nothing to worry about

mg flasher , bm or mhd . any of their 91 93 oct maps will always show corrections depending on fuel quality iat's etc . if you dont want any run a higher e mix .

this is a very recent log of my car on the mhd stage2 hpfp e40 map , running a little north of e40 mix , no corrections at all

https://datazap.me/u/thomas/stg2-hpf...39-40-41-42-43

[gantona]

Hello !
First, I would like to wish you all an happy new year, safe, healthy with no knock and full octane !

New to BMW platforms, I'm recently owning a 2017 340i xdrive AT F31.
I'm based in France, where 93/98 octane is easily available (E5).
I just tuned to BM3 stage 1 93/98 v2.2

I would love to get your feedback on the following logs :
4th gear pull
Running exclusively 98 octane
https://www.bootmod3.net/log?id=61d0...0b435b30031199

Thank you !

[340mang]

Originally Posted by gantona

Hello !
First, I would like to wish you all an happy new year, safe, healthy with no knock and full octane !

New to BMW platforms, I'm recently owning a 2017 340i xdrive AT F31.
I'm based in France, where 93/98 octane is easily available (E5).
I just tuned to BM3 stage 1 93/98 v2.2

I would love to get your feedback on the following logs :
4th gear pull
Running exclusively 98 octane
https://www.bootmod3.net/log?id=61d0...0b435b30031199

Thank you !

I'm by no means an expert but you have tons of timing corrections. Are you sure of the quality of your fuel?

[gantona]

Originally Posted by 340mang

I'm by no means an expert but you have tons of timing corrections. Are you sure of the quality of your fuel?

I'm sure I'm running E5 98RON since the last 10 fuel ups, but I can't be sure about the quality of the latest one...

I did another log earlier the one above, this time in 3rd.
less correction isn't it ?
https://www.bootmod3.net/log?id=61d0...90c629585d093e

[340mang]

My understanding Anything more than -2 degrees of timing corrections is something to be concerned with. Cylinder 4 hits -5 at one point. Outside of bumping your octane up I'm not sure how best to help you diagnose the problem. Perhaps drop to a 91 tune to see if it clears the corrections.

For me I have always boosted my octane by bumping my ethanol level until the corrections were gone. I know this isn't an option for most. I'm lucky to have e85 and 93 very close so I can blend easily.

[T_H_O_M_A_S]

Originally Posted by gantona

Hello !
First, I would like to wish you all an happy new year, safe, healthy with no knock and full octane !

New to BMW platforms, I'm recently owning a 2017 340i xdrive AT F31.
I'm based in France, where 93/98 octane is easily available (E5).
I just tuned to BM3 stage 1 93/98 v2.2

I would love to get your feedback on the following logs :
4th gear pull
Running exclusively 98 octane
https://www.bootmod3.net/log?id=61d0...0b435b30031199

Thank you !

corrections are normal with these maps , all tuners have it . if you dont want to see them add ethanol .

[Jnat]

Timing corrections happen inevitably. General rule is if you see corrections across all cylinders you either need to add octane or change the map. If you see corrections in one or two cylinders consistently, it doesn't nec mean octane, it could be a plug/coil/injector or worse. If you have a clean log in five cylinders, i'd be swapping plugs, coils ect to see if the correction follows a part. My two cents worth.

[Duncan140i]

Originally Posted by gantona

I'm sure I'm running E5 98RON since the last 10 fuel ups, but I can't be sure about the quality of the latest one...

I did another log earlier the one above, this time in 3rd.
less correction isn't it ?
https://www.bootmod3.net/log?id=61d0...90c629585d093e

Your fuel quality is not good enough for that map. None of the cylinders are hitting target. It will be safer and probably make more power on the 91 map. Cylinder 6 is poor on both logs, I'd keep a little eye on that on future logs.
If you have access to ethanol you could add a splash to see if it improves.
You will always get corrections on these maps as stated by others, but when it's more than -3 and across all cylinders then it's nearly always weak fuel.

[gantona]

Thanks for your input !
I put fresh gas at a supposed better station (total)
https://www.bootmod3.net/log?id=61d1...729b17e8648b9e
https://www.bootmod3.net/log?id=61d1...90c629585d0bb9

Looks better now despite some correction.
Do you still think I should switch to 91 map ?

FYI, I flashed stage 3 XHP today, after these logs. I don't expect it can change something (BM3 v2.2 remove torque limiter anyway...), but I may be wrong.


thank you !

[leew102]

Edited with better logs...

Hoping someone might be able to help look at my logs and see if they look good! BM3 Stg2+ 93 w/ TU pump

https://www.bootmod3.net/log?id=61d6...0b435b300320d1
https://www.bootmod3.net/log?id=61d6...90c629585d1883
https://www.bootmod3.net/log?id=61d6...729b17e8649a35

Thanks!

[gantona]

Fueling looks good to me, but no surprise : you have timing correction.
BM3 will certainly claim bad fuel one more time…

[CrimsonMoonLight72]

Originally Posted by gantona

Fueling looks good to me, but no surprise : you have timing correction.
BM3 will certainly claim bad fuel one more time…

Man I would switch to the 91 map no doubt. If you’re not getting any help elsewhere....definitely do the 91 at least until maybe a map update which may happen.....

[zbraptorsdr]

Hi there, flashed the latest stage 1 OTS customrom from bootmod3 and took the following logs. on a normal socal day after some time for the car to adapt.

https://www.bootmod3.net/log?id=61db...729b734798c5c9

Are the corrections cause for concern? Timing seems to clean up as RPM increase, but there are still corrections that I just want a 2nd opinion on. car has 28k miles on it and I have plugs for when I do my next service. for fun I might try some race gas (100 oct) just to see if it cleans up more.

Thanks!

[AleksanderSuave]

running MHD e40 tune, with catless DP and TU pump.

Getting a dme 118002 Fuel Mixture too rich code (occasional CEL but not often). Any particular run or should I log at idle to help diagnose it?

[8727]

Hi,

I found some timing corrections or even knocks in bm3 stage1 OTS maps, though the stock tune seems fine.
Example logs below are recorded with a casual driving, instead of a fixed-gear hard pull.

- stock tune: this looks fine. No knock reported and less timing corrections.
https://www.bootmod3.net/log?id=61de...729b63bcb5733a

- 93 octane: timing corrections are observed and some knock are present.
https://www.bootmod3.net/log?id=61d6...729b1628c6f5ff
- 91 octane
https://www.bootmod3.net/log?id=61de...90c6326087a0bb
- ACN91: timing corrections and knocks persist in the worst-fuel-quality map.
https://www.bootmod3.net/log?id=61df...729b65b281abfe
I tried logging several times for every map, but bm3 maps tend to have corrections and knocks.

Regarding the fuel quality, no explicit octane value is displayed at gas stations in Japan where I live.
So the exact octane quality is unclear, but the regulation says fuels must have 96+ RON (~91 AKI) and the actual quality is said to fall between 98 and 100 RON (over 93 AKI).

My car is 2018 F36 440i. The hardware is stock.
I changed all plugs and coils last November, so I don't think this is a plug/coil issue.
They looks working fine with the stock tune.

In my noob opinion, knocks should be cleared for avoiding any damage to engine in the long run.
Is there any possibility to cause this other than the fuel quality?

Any feedbacks are appreciated.

[realone]

Yesterday I flashed my ECU with the MHD flasher, and everything working well.

So after a testdrive I made some datalogs, and saw there is a lot of cylinder corrections. Also the torque act. Clutch nm stay below 500nm, I thought the stage 1 map will be between 500-580nm.

My car:
- BMW G30 540i with stock DP and exhaust
- Fuel: Shell v-power RON98
- Map: v3.3 stage1 93/98

4th gear
https://datazap.me/u/realone/log-164...37-38-39-40-41
https://datazap.me/u/realone/log-164...37-38-39-40-41
https://datazap.me/u/realone/log-164...37-38-39-40-41

3rd gear
https://datazap.me/u/realone/log-164...37-38-39-40-41
https://datazap.me/u/realone/log-164...37-38-39-40-41

Can you guys check the datalog and see how this tune performs?

[arvi604]

Hi all

Running bm3 stage 2 91 Oct map. Using Shell 93 octane fuel. Very curious on feedback.

https://www.bootmod3.net/log?id=61de...729b63bcb5721f

Thanks in advance

[IMS-340C]

Not too good, you got a considerable timing corrections and timing delta for knock adaption is too high.

With stage 98 RON this shouldn't happen.

I suggest going back to stock and taking another log in 3rd 2500 RPM up to 5th gear WOT if you can as one gear does not show the full picture.

Don't look too much into torque actual, as long as you have high load - boost and high timing advance means you have good power.

Originally Posted by realone

Yesterday I flashed my ECU with the MHD flasher, and everything working well.

So after a testdrive I made some datalogs, and saw there is a lot of cylinder corrections. Also the torque act. Clutch nm stay below 500nm, I thought the stage 1 map will be between 500-580nm.

My car:
- BMW G30 540i with stock DP and exhaust
- Fuel: Shell v-power RON98
- Map: v3.3 stage1 93/98

4th gear
https://datazap.me/u/realone/log-164...37-38-39-40-41
https://datazap.me/u/realone/log-164...37-38-39-40-41
https://datazap.me/u/realone/log-164...37-38-39-40-41

3rd gear
https://datazap.me/u/realone/log-164...37-38-39-40-41
https://datazap.me/u/realone/log-164...37-38-39-40-41

Can you guys check the datalog and see how this tune performs?

[IMS-340C]

You have good boost but timing is low and inconsistent through the 6 cylinders.

Also you need to select timing correction in your log parameters.

Originally Posted by arvi604

Hi all

Running bm3 stage 2 91 Oct map. Using Shell 93 octane fuel. Very curious on feedback.

https://www.bootmod3.net/log?id=61de...729b63bcb5721f

Thanks in advance

[arvi604]

Originally Posted by IMS-340MP

You have good boost but timing is low and inconsistent through the 6 cylinders.

Also you need to select timing correction in your log parameters.

Added those parameters to these new logs

https://www.bootmod3.net/log?id=61e3...0b434eb1ce80d7

https://www.bootmod3.net/log?id=61e3...90c66772a61746

Thanks in advance!

[IMS-340C]

It's good, some timing inconsistency between cylinders but ok.

Try to log at least in 3rd gear or preferably higher, multiple gears if you can.

Originally Posted by arvi604

Added those parameters to these new logs

https://www.bootmod3.net/log?id=61e3...0b434eb1ce80d7

https://www.bootmod3.net/log?id=61e3...90c66772a61746

Thanks in advance!