S52 MS41.1 Map for M50 manifold

[MarceloMontero]

Hello (Sorry for my english)

I have a e36 325i M50 with 413 silver label and will have a M3 S52 MS41.1 , and i want to mantain OBD2 for live readings.

With the 325 I learned how to make the maps with tunerPro and moates burn 2 with the 27sf512.
I know that the Flash-EPROM of the obd2's ecu's are not replaceable like the 413.

http://www.bimmerforums.com/forum/attachment.php?attachmentid=528503&stc=1

I already have the Galleto 1260 and one VAG 409.

But now , I want to use the 325 intake manifold for the S52, and I know that if I just put the manifold I will loose low end tq.

The lost torque is because the bigger manifold gives more air but the stock map gives less fuel than the needed ?

So, can you help me and explain me with the basics of flashing and what should I do to recover that lost torque? What values should I modify ? How much should I modify them ? The romraider is only to edit the file ? How do i flash the file to the dme ?

With the M50 DME I was not afraid of doing 500 flashes because it is a replaceable chip and i have like 10 of them , but not with this , if something goes wrong , do you know where can i get the socket and make this ? And if it would still use the 28F200 ? With the socket i would be able to use a 29F200 with an external burner.

http://www.bimmerforums.com/forum/attachment.php?attachmentid=528504&stc=1


http://www.bimmerforums.com/forum/attachment.php?attachmentid=528558&stc=1
It may be possible to buy 2.54mm headers and solder it , but , where can i source a PDIP 28F200? They doesnt exist anymore.




So the general questions are
-The pins layout is the same between the S52 dme and the 413 ? ( Just in case that i kill the s52 dme, just until i get another ms41 )

-Can I reuse the S52 manifold in the M50 of the 325 ?

-How do I flash the BIN to the DME using the galleto ?

-What map values should i modify to regain the lost torque and have more high end hp ?

-What socket do i have to use for the dme removable chip? Instead of a PSOP I would like to use a PDIP
And if no , where can i find a header for PSOP ?

- If i get the socket , what type of chip would i have to buy ? Is there equivalents ?

-Do i have to update the dme to MS41.2 ? What is the advantage of doing that ?

-Is it that really dangerous and within 1 flash the chip can die ?


I already found some info, but would prefer if someone with more knowledge can instruct me.
http://www.openms41.org
http://chipster.no/index.php?route=product/product&product_id=99
http://www.bimmerforums.com/forum/showthread.php?2066394-Siemens-MS41-2-EWS-SAP-and-rear-O2-removal (post #10)
http://www.romraider.com/forum/viewtopic.php?f=42&t=8749
http://www.bimmerforums.com/forum/showthread.php?184700-Siemens-MS41-x-chip-types-models&highlight=28F200

Thanks a lot and i hope this thread helps other people , not only me.


Update #1
Found this similar post: http://www.romraider.com/forum/viewtopic.php?f=42&t=11426

[rowleym]

Sub'd. No help sorry.

[Cc516]

Most of the stuff youre trying to edit can be accessed in the partial 24kb bin, which can be flashed via your 1260. You only need the right programs, which are all over the websites you posted.

If you have a dme off of an obd2 e36 M3 (s52b32), the software inside your dme is ms41.2 , regardless of the fact that they say ms41.1. I personally see No point in chipping these dmes because you can flash to them an unlimited amount of times, and all the good stuff you want to access is in the 24kb that you can pull from your Not sure about chipping once bricked though.

if you do have ms41.1 software, and would like to upgrade it to ms41.2, entirely possible but you'll need a bench rig, because you need to flash the entire 256kb. your 1260 cable will only give you access to the partial 24kb .

That being said, i think you should read into flashing this specific platform a lot more. if you know of romraider and openms41, then you have everything you need right in front6 of you, you just haven't put in the time to study all of that information. Its all very easy once you study it. Im all for being open and helping out, but you're asking very very basic questions that you could absolutely without a doubt answer for yourself with a little google searching.

[gpeterson]

I can't contribute much, but if you want a spare 28f200 and flasher I happen to have them for sale - http://www.bimmerforums.com/forum/showthread.php?2166608-MS41-flashing-USB-Willem-POSP44-adapter-and-AB28F200

[MarceloMontero]

Most of the stuff youre trying to edit can be accessed in the partial 24kb bin, which can be flashed via your 1260. You only need the right programs, which are all over the websites you posted.

If you have a dme off of an obd2 e36 M3 (s52b32), the software inside your dme is ms41.2 , regardless of the fact that they say ms41.1. I personally see No point in chipping these dmes because you can flash to them an unlimited amount of times, and all the good stuff you want to access is in the 24kb that you can pull from your Not sure about chipping once bricked though.

if you do have ms41.1 software, and would like to upgrade it to ms41.2, entirely possible but you'll need a bench rig, because you need to flash the entire 256kb. your 1260 cable will only give you access to the partial 24kb .

That being said, i think you should read into flashing this specific platform a lot more. if you know of romraider and openms41, then you have everything you need right in front6 of you, you just haven't put in the time to study all of that information. Its all very easy once you study it. Im all for being open and helping out, but you're asking very very basic questions that you could absolutely without a doubt answer for yourself with a little google searching.


Thanks for the quick reply!
Ok, so the chip is not likely do die within a couple of flashes? That reliefs me a lot, if the chip handles so I wont do the socket thing.

I don't have the car yet, that's why I haven't tried and im not sure if its 41.1 but as you say it should be 41.2 , but as soon as I get it like in 3 weeks I will try and post the results.

Ok, I will read to get the idea of what and how can I optimize the map for my manifold needs.

I have RomRaider to edit the bin, and the other I need to buy the SiemensMS41FlashTool (http://chipster.no/index.php?route=product/product&product_id=99) to check and write the bin to the dme?

Thanks a lot for your help

[Cc516]

Thanks for the quick reply! Ok, so the chip is not likely do die within a couple of flashes? That reliefs me a lot, if the chip handles so I wont do the socket thing. I don't have the car yet, that's why I haven't tried and im not sure if its 41.1 but as you say it should be 41.2 , but as soon as I get it like in 3 weeks I will try and post the results. Ok, I will read to get the idea of what and how can I optimize the map for my manifold needs. I have RomRaider to edit the bin, and the other I need to buy the SiemensMS41FlashTool (http://chipster.no/index.php?route=product/product&product_id=99) to check and write the bin to the dme? Thanks a lot for your help

There you go. Thats One of the programs i was talking about, i just wasn't going to hand it to ya since its readily available ;) .

With ms41 flash tool, you can read/write to the DME as many times as you want. Im not sure about other programs though. Ms41 flash tool is only meant for reading/writing, and With your 1260 cable you will only be able to read/write the 24kb partial, but thats all you'll be needing.

So connect your 1260, get the flash tool up and running, select read > partial 24kb and when its finished it will allow you to save the .bin wherever you want.

You will then have to use RR, winols or some type of hex editor to actually edit the values, then save the edited bin. After that younwrite it back to the dme through the flash tool.

To enable writing you need to bridge some pins on the round 20 pin connector under the hood. Bridge pins 14 to 18, and then bridge pins 2 and 17. I use 2 pieces of speaker wire to bridge them and it works fine for me. Make sure you connect a 12v charger to battery while writing.

That should be enough to get you up and running. Good luck :)

[mrf]

http://www.openms41.org/reading-writing

[flyfishvt]

Just to clarify the ms41.1/ms41.2 discussion

All US spec 328s and M3s use the MS41.1 dme. That's the hardware. It's identical in both cars. The only exception is some early 328s used the ms41.0 dme. MS41.2 refers to the software used in the M3 dme. Same hardware.....different software.

[hakentt]

The lost torque is because the bigger manifold gives more air but the stock map gives less fuel than the needed ?

There is nothing you can do to the tune to get back the torque! M50 intake manifold runners are way to big for low RPM, this causes the air to tumble in the runner losing velocity. If this was a software issue then BMW would not spend investing millions of dollars for new intake manifold design, they could of just used M50 manifold instead.

[mrf]

Just to clarify the ms41.1/ms41.2 discussion

All US spec 328s and M3s use the MS41.1 dme. That's the hardware. It's identical in both cars. The only exception is some early 328s used the ms41.0 dme. MS41.2 refers to the software used in the M3 dme. Same hardware.....different software.
All MS41 is the same hardware. You can flash an MS41.1 or MS41.2 to an MS41.0. And vice versa.

[flyfishvt]

All MS41 is the same hardware. You can flash an MS41.1 or MS41.2 to an MS41.0. And vice versa.

Thanks for clarifying

[MarceloMontero]

Hello guys,

I managed to reflash my ECU, it is a 41.2, I did some basic changes as "Siemens-MS41-Tuning-Guide.pdf" stated.

Now I´m going to install the M50 manifold, should I change something else for the intake difference? (Sorry to ask this again)

Thanks for your help.