DEVELOPMENT : MS41.0 to MS41.2 Conversion

328i-sport-rossi · **Joined:** Tue Jan 24, 2017 11:58 am **Posts:** 478

328i-sport-rossi wrote:

After finding a few issues lately, one being mechanical i decided to go back to ms41 as i heard so many variations of stories surrounding using ms41.2.
I donr this purely based on the fact that the ms41 software and all maps were designed for this motor stock, out of the box and it gave me a fresh platform instead of amending so many of the ms41.2 tables to then think there may be more that are not defined yet and still only suitable for the M3. also i found when flashing ms41.2 partial files when i read them back there were random changes to the flash i had done and that was the last straw.
I am now running full MS41 again but now i cant log or read addaption tables !

what is going on

I have sorted it all but i dont know how, it was all becoming a mess so i flashed back to MS41 to see how things performed, car ran ok but had no ability to log or read adaptions so went back to MS41.2 and everything is fine, adaptions are happening and when reading back files they are all OK. a little gremlin was hiding somewhere i think

esz · **Joined:** Mon Jan 23, 2017 4:52 pm **Posts:** 27

Hi,

I have use ms41 to ms41.2 conversion for a few month, so now i've got DTC error told "
P420 and P430" from my understanding P420&P430 is cat efficiency bank1&2 but in my car(EU) that have no downstream o2 sensor, why this DTC error is show? what should i do for solve that?

Thanks,

328i-sport-rossi · **Joined:** Tue Jan 24, 2017 11:58 am **Posts:** 478

esz wrote:

Hi,

I have use ms41 to ms41.2 conversion for a few month, so now i've got DTC error told "
P420 and P430" from my understanding P420&P430 is cat efficiency bank1&2 but in my car(EU) that have no downstream o2 sensor, why this DTC error is show? what should i do for solve that?

Thanks,

I had these recently and i disabled them via the new options within the latest definition

esz · **Joined:** Mon Jan 23, 2017 4:52 pm **Posts:** 27

328i-sport-rossi wrote:

esz wrote:

Hi,

I have use ms41 to ms41.2 conversion for a few month, so now i've got DTC error told "
P420 and P430" from my understanding P420&P430 is cat efficiency bank1&2 but in my car(EU) that have no downstream o2 sensor, why this DTC error is show? what should i do for solve that?

Thanks,

I had these recently and i disabled them via the new options within the latest definition

About new option for disable that your mention. Where is it? Cloud you explain?
Or
Oxygen sensor
DTC 70, 61 Downstream o2 sensor heater (bank1, 2), set to disable
DTC 79, 61 Downstream o2 sensor heater (bank1, 2) alternate, set to disable
DTC 77, 78 Downstream o2 sensor voltage (bank1, 2), set to disable
set DTC 233/234 minimum volts to 0, and DTC233/234 maximum volts to 5.

Thanks,

busterhax · **Joined:** Wed Jan 22, 2014 10:54 pm **Posts:** 1774

You don’t need to do voltage. Just the 1 heater delete. That’s it.

esz · **Joined:** Mon Jan 23, 2017 4:52 pm **Posts:** 27

busterhax wrote:

You don’t need to do voltage. Just the 1 heater delete. That’s it.

Ok now i'm disable all of them is:
DTC 70, 61 Downstream o2 sensor heater (bank1, 2), set to disable
DTC 79, 61 Downstream o2 sensor heater (bank1, 2) alternate, set to disable
DTC 77, 78 Downstream o2 sensor voltage (bank1, 2), set to disable
wait and see how it go.

Now i use Torque(android application) and ELM327 BTdongle to see some parameter when i'm driving. today i have strange problem LTFT2 is show -100.8(before value is~3.1) i'm shutdown and restart engine immediately and check LTFT2 again that still show -100.8, after that i shutdown engine and take some time and restart engine n check LFTF2 is show normally value.
What's matter or i have anything false?

Thanks,

busterhax · **Joined:** Wed Jan 22, 2014 10:54 pm **Posts:** 1774

Running 1 o2 sensor?

esz · **Joined:** Mon Jan 23, 2017 4:52 pm **Posts:** 27

busterhax wrote:

Running 1 o2 sensor?

i'm running 2 pre o2 sensor.

busterhax · **Joined:** Wed Jan 22, 2014 10:54 pm **Posts:** 1774

Swap o2 sensors and see if bank 1 does the same thing?

esz · **Joined:** Mon Jan 23, 2017 4:52 pm **Posts:** 27

busterhax wrote:

Swap o2 sensors and see if bank 1 does the same thing?

Ok i'll try, if you told like this that's mean i'll have o2 bank2 fail or connection fail?

Thanks,

For your information
About torque pro problem is bug in app. Not often show wrong value occur.

Thanks,

bernardo774 · **Joined:** Thu Aug 17, 2017 7:21 pm **Posts:** 24

Hy,

Hy,

i do the MS 41.2_Full but now i can`t go back to MS41.0 or do the Full Write again with the MS41.2.
The software just do nothing, the status bars donst moves.

test the Chipster and MS41QuickFlash, and no work 41.2 to 41.0

In outhers ecu with MS41.0, works perfect, since i stay with the MS41.0

janithdg · **Posted:** Mon Nov 12, 2018 12:42 pm

bernardo774 wrote:

Hy,

Hy,

i do the MS 41.2_Full but now i can`t go back to MS41.0 or do the Full Write again with the MS41.2.
The software just do nothing, the status bars donst moves.

test the Chipster and MS41QuickFlash, and no work 41.2 to 41.0

In outhers ecu with MS41.0, works perfect, since i stay with the MS41.0

You need to do a full write of ms41.0 to revert back

Sent from my iPhone using Tapatalk

busterhax · **Joined:** Wed Jan 22, 2014 10:54 pm **Posts:** 1774

bernardo774 wrote:

Hy,

Hy,

i do the MS 41.2_Full but now i can`t go back to MS41.0 or do the Full Write again with the MS41.2.
The software just do nothing, the status bars donst moves.

test the Chipster and MS41QuickFlash, and no work 41.2 to 41.0

In outhers ecu with MS41.0, works perfect, since i stay with the MS41.0

Chipsters will brick it with that conversion. Use Quickflash only

jannis335i · **Joined:** Tue May 29, 2018 7:42 am **Posts:** 2

Hi guys,

I'm about to convert my 41.0 to 41.2. I noticed that I can't copy the whole table 1 to 1. The contents of the table are taken over, the rows at the top and left are not taken over. Is the problem known?

janithdg · **Posted:** Sat Dec 01, 2018 2:44 pm

jannis335i wrote:

Hi guys,

I'm about to convert my 41.0 to 41.2. I noticed that I can't copy the whole table 1 to 1. The contents of the table are taken over, the rows at the top and left are not taken over. Is the problem known?

If your doing this for an FI engine you will have to rescale the load columns, if it’s NA, it doesn’t matter you copy from ms41.0 or not as anyhow you will have to re-tune the partial fuel map

RomRaider

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DEVELOPMENT : MS41.0 to MS41.2 Conversion

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