How to tune ms41 ECUs (BMW m52/s52 engines): basics

Update: New flash tool available here: sites.google.c...
The original chipster sw is no longer available because the creator has passed away.
In this video I will show basics how to tune siemens ms41 engine control units used with BMW m52/S52 engines.
Big credits to the guys that have made all this ms41-tuning possible: Abhishek Shinde, Alec, Kim, Kyle, and Dale. If you find this information useful, considre dontaing to the ms41 project: www.paypal.me/A... and to the RomRaider folks: www.paypal.com...
If you want to help making of these videos, you can donate to this channel through PayPal: paypal.me/pazi88
The OBDII cable I'm using available at Ebay: tinyurl.com/yb...
The OBDII to round bmw connector adapter available at Ebay: tinyurl.com/yb...
RomRaider download: www.romraider.c...
MS41 ecu definitions for RomRaider: www.romraider.c...
MS41 wiki: sites.google.c...
MS41 section on RomRaider forum: www.romraider.c...

[@b.1z966]

If I was in Finland right now...ahh man....i would buy you a beer and a big steak :) Great video, and not just this one, all of them. Your knowledge is superb. Greetings from Serbia.

[@kristjan100]

I agree, greetings from Estonia. I've never even owned a car but I like what I see here. Lots of BMW love in Estonia.

[@WLguitarist]

Thanks guys! This information is exactly what I needed. Once again thanks! :)

[@Mjongtyre]

Wow, just wow. We appreciate your videos! This channel right here gives so much explanation about bmw's we mostly do our racing in baltics and helps putting more power into them. Giving DIY guys chance to do more with less money. Thanks alot!!

[@palbertto]

Thanks for all King PAZI! Greetigns from Portugal !

[@antonkrylov9516]

great job! Thank you from Kazakhstan! English subtitles save me life ;)

[@daveb2205]

Thank You! sooo much great info. I have been trying to work out how to do this for a while but couldn't work out what the deal was with my Australian delivered hardware - then I stumbled across your videos, and here is all the knowledge I need!! Very much appreciated :D

[@pazi88]

You are welcome! For more information, search trough the ms41-section on RRforum and the ms41 wiki. And If you find all this useful consider donating to people who have made all this possible.

[@nolimits44BF3]

this is so good please keep these kind of videos coming. i live in Australia and am English speaking but have been watching your videos for sometime now. the subtitles help a ton but you also explain things so well :D

[@pazi88]

Thanks! I will keep them coming.

[@minimoke8394]

What a fantastic video. Hats off to people like you.

[@nononanonon]

Very valuable info. Thank you so much!

[@ciomagteodor2150]

You are doing a really great work and helping a lot of people you are going to get intro car enthusiast haven :))

[@pazi88]

Ciomag Teodor Thanks a lot!

[@TheKingie07]

Great video thanks. I'm doing an m52tub28 swap into a 99 e46 318i sedan and interesting in mild tuning to increase rev limiter. Thanks from New Zealand.

[@pazi88]

For the ms42 what is in m52tu you will need this bit more expensive flash tool for that: chipster.no/index.php?_route_=Software/Siemens-MSS5x-Flash-Tool-MS41-MS42-MS43-MSS50-MSS52-MSS54 and you also need to convert the ms42 to use different software version if yours is wrong. Check wiki: www.ms43wiki.com/index.php?title=MS42

[@NyxNick]

Dear sipa thank for your videos and bmw education! cheers from Mauritius Island

[@pazi88]

Thanks a lot!

[@bikehubjapan]

Thank you! Great video as always. I will join the romraider forum and see if someone has anything already made for M52B25!

[@pazi88]

There is not much tuned files available. And you will get better results by doing the tune by yourself. Stay tuned and I will later show how.

[@bikehubjapan]

OK buddy. Thanks. I shall wait for your next excellent video

[@peterm3861]

Hey pazi, first I have to thank you a thousand times for sharing your knowledge and experiences! Your videos are extremely informative and helpful! Whenever I build my own turbo Bmw, I will mention you in some video! I haven't had the time yet to watch all of your videos but I will have to, there is nothing more interesting. But I already know some stuff about the different M5x engines and turbocharging them. But since you are the one with the experiences... I want to build an E36 turbo. I plan on using as many OEM non-M parts as possible to keep it as low budget and fun as possible. I thought about 450-500hp on 102oct pump gas since we don't have E85 anymore in Germany. What do you think would be the engine to go with whilst keeping as many parts stock as possible? M50B25nv, M52B28 or maybe M54B30? Looking at stock internals, DME, head gasket and maybe possibility to lower CR like milling the pistons for example. What do you think of maybe M54B25/B30 or M52B28TU which is similar to M54? I think downside of M54 would be rods. But boost limited to maybe 100Nm per rod should be ok, shouldn't it? And I've read that M54 has factory MLS headgasket. Also dual Vanos and good DME. M54B30 has some problems with weak piston rings and fewer cooling passages in block due to ULEV emissions stuff, but M52B28TU would be the easiest solution for around 450-500hp and around 600Nm, what do you think? How is valvetrain, pistons, rods and headgasket in comparison to M50nv and M52? Could I keep stock camshafts and make them fit for turbocharging via Vanos setup? Thanks a lot!

[@slavtcoa6856]

Mit 102 schafft der m50 schon die 450-500ps komplett Serie (ZKD nicht haltbar). Am m52 und 54 sind die Pleuel schwächer, da kannst du aber mit China Teilen arbeiten z.B. maxpeedingrods sehr gut bis auf kolbenbolzen die man ggf minimal nachonen sollte

[@NathansGarage]

Thank you for this great video. I'm learning so much my head is exploding right now :) I actually just want to turn things in the ECU "off" ABS, DSC, airbags, downstream O2 sensor etc. I have a 2000 Z3 2.8 in the USA. I assume that's in the "Control Bits" at the top of the list?

[@Dracuz123]

This is about tuning the ecu (engine control unit) - no such thing as disabling ABS, DSC and airbags in that because they are not engine related. There are separate control units for that which communicate with the ecu. The easy way out of this is just pulling the related fuses, but that will result in a christmas tree on the dash.

[@pazi88]

Yes I know. I have extra hole in my rear muffler :D

[@rickkligma3375]

pazi88 hey thank you for your very helpful videos, I'm building an s52 turbo e30 with ms41.1 dme, do you know specifically how to disable/delete immo(ews)? Thanks you for your time.

[@rickkligma3375]

pazi88 can you send me your 24kb dump so I can compare it to mine? For the turbo? Specific maf tables I would appreciate it

[@doofy2063]

pazi88 how did you bridge the 20 pin connector with switch?

[@steffenkawa8374]

@pazi88 i wanna buy the MS41 Quickflash. But i have M52B28 from May 1995 in my E30. My ecu is flashable (ms41.0) The linked adapter KKL USB FT232RL - K-line diagnose works for newer engines. Because of that i have 2 questions. 1. Does the MS41 Quickflash work with my engine? 2. Which cable should i buy. Thx in Advance.

[@foreignsonly746]

thanks alot @pazzi88 garret turbo m52tub28 e46 is coming along here in Canada

[@olegplanets]

Great walk-through! Would be awesome if you did video on SAP delete

[@MrNYUNDERCOVER]

thank you for responding. ...I'll be in touch

[@ggrrmmi]

Thanks for sharing your knowlegde !! Very good video !!

[@crankshaft6666]

Nice video (as usual), thumbs up! As said often, avideo about fitting the E34 rear axle in the E30 would be very interesting, I'm sure I'm not the only one who's interrested in ;)

[@_coffeeandcigars]

is the swap for big power builds (big diff case)?

[@crankshaft6666]

Guess most people want it because of five lug and bigger brakes, but it's also meant to be able to handle more power

[@pazi88]

Ra Du Hopefully I have enough time in some point at least show how it looks done. I'm probaply not going to do another swap like that :D

[@pazi88]

654879 5469684 Yes. We still have the medium typ188 case. But typ 210 is bolt on case now. We made the swap because at the time we didn't find proper e30 rear axle to start with.

[@e36schrauber]

Thank you very much

[@MrNYUNDERCOVER]

try to modify the obd2 connector, the same way you did, but both of the obd2 connectors that I have are wired the same... you said to jump #14 and #18 on the obd2 connector, I missing something? can you please explain? where did you get your obd2 connector or do I need to rewire the obd2 connector?

[@user-cq6nl9dm1i]

awesome video

[@DkingE39]

amazing video I can't wait to start my Frankenstein E39 project tuning stock ecu. I estimate ill get to about 850ft lbs of tq @ 5k rpm

[@pazi88]

DkingE39 You will need quite big maf for that kind of engine. What are you planning to use?

[@DkingE39]

pazi88 planing on using the Porsche one I forgot the exact one it's suppose to be a 3.5 in diameter

[@DkingE39]

pazi88 also do you know the max length to rethread head bolts on m52 iron block

[@tuningpartsperformance2901]

Can you make a video how to tune ms41 that shoots backfire catless

[@brandonvelasquez3320]

How do we find the software version???

[@Dracuz123]

Your current version or new upgraded one? I assume the upgraded one. You won't get it, there is a policy on the Rom raider forum, that you don't share tuned files. Reason being that you learn it yourself.

[@hamzabenz7927]

NICE JOBE byt whene you adepte a turbo do you need to programe the ecu

[@hermannweinzierl5731]

very good explanation!!

[@77mRacing]

Awesome video! How does one tune the MS41.1 for forced induction? Can you cover that as well?

[@pazi88]

Matt Mellott Yeah in some future video.

[@FirstLast-tx3yj]

@@pazi88 my bmw is obd1 1992 m50nv I want to go turbo so does the stock ecu work or which one should I get?? It wasnt clear which ecu is needed for obd1 turbo car situation

[@GaragE36uk]

excellent video, I see in your comments about ews delete but I can't seem to find any option to do this, could you help?

[@WickedTRX]

That's great info! Can we disable EWS, is there a problem not running a speed sensor to the ECU? it would be great if you could do a video about swapping a m52 and using the ms41.

[@pazi88]

WickedTRX Yes you can disable ews like this. Check the control bit section at the romraider forum. And no need for speed signal if you put vss error engine speed limiter to same value as the regular engine speed limiter.

[@kylejcool]

thanks for the video!

[@samia817]

Hi Pazi88, first up thanks for taking the time to make these helpful and informative videos, I'm hoping you - or indeed anyone - can help me out with a small issue. I have the K-Line cable with the appropriate 232RL chipset. I have the OBD2 to OBD1 converter, which already came with the pins bridged, and I am using the MS41 QuickFlash program as you recommend. Anyway, I can read the maps fine, do my comparison, edit and save the map OK using RomRaider, but no changes are being made to the map. Now I am aware on the OpenMS41 site there is a page regarding enabling write access, so I am assuming this is the issue - but the instructions are a little vague. it says: 1. Locate the x20 Diagnostic Link Connector near the RH strut tower in the engine bay and unscrew the cover. 2. Use a small piece of wire to connect Pin 14 to Pin 18 to put the ECU in Write mode. 3. Use a small piece of wire to connect Pin 2 to Pin 17 to bridge the OBD2 port in the car to the ECU. 4. Turn the ignition on, and use MS41 Quickflash to read/write the ECU. So I have the following questions about that procedure... Firstly, does Step 2 have the same effect as bridging pins 14 & 18 in the OBD1 converter cable? Second, is step 3 relevant on a UK car (Z3 2.8, 1997) that as far as I know has no OBD2 port in the car? Third, is bridging those pins with the ignition off sufficient, or do I need to cycle the ignition, then remove them, then plug the cable onto the round socket? If this isn't the cause of my problem, what else am I doing wrong? I feel like I am 90% close to completing my first ECU remap but I am stumbling at the last hurdle! Any help gratefully appreciated!

[@ke70gt18]

I've got the same problem the tune wont stick to the ecu

[@ke70gt18]

try downloading a standard map from rom raider and see if that will stick

[@samia817]

did that work for you then?

[@ke70gt18]

I tried it last night and still had no luck with mine the quick flash gets to 99% complete when writing and tells you to turn off you ignition for 10 seconds but the map hasn't changed

[@ke70gt18]

Reading the map isn't a problem ive done pin 14 to 18 and got the right bmw usb plug so im not sure what im doing wrong im tuning an m52b28 with a ms41. 0 index 10

[@didulads]

Hi Pazi88, can there be any difference in the ECU map between the iron block(US) M52B28 and alu block(EU) M52B28? My wire harness, ECU(MS41.0) and everything is from an EU car which originally came with an Alu block. Now I have changed it to a iron block which I imported from US. Head and harness is from the old EU engine. Wire harness modified to support the rear mounted crank sensor. I heard that some US cars change(direct plug and play) their ECUs to MS41.0(EU ECUs) in their Iron block cars saying that they are less restrictive than US maps in MS41.1 ECUs. May be because of O2 sensors and emission regulations. So, will their be any issue if I use the same MS41.0 ECU with the same map which came with the Alu block with my new iron block? Like in the knock maps between Iron and Alu blocks. Thank you in advance for your valuable feedback.

[@BlueeeXBL]

Hey that round obd adapter with the switch to enable write acess) were can i find it? the link to it is dead..

[@tuzemens_cars]

Hi, What is “Engine Speeed Limiter (Resume Delay)” ?? What effect does it have on rev limiter and how to adjust it? I have read the romraider table description but I couldn’t understand. Thanks.

[@gurdeepvirdee7397]

Hello Pazi88 your videos are very informative love watching them! I have a question maybe you can answer. I have a ECU which is already mapped, however i would like to delete the EWS when i try download the map file from the ecu i get access denied by ecu B0. I have tried a orginal ecu with no map and it worked fine. I am using ms41 flash tool. Is this something you have come across?thanks

[@pazi88]

The mapped ecu you have is probably read protected. ms41 ecus don't normally come like that but I know some tuner can read protect those. And it's not really read protected as far as I know. The ecu just responds something like "locked" when the flash tool asks for ecu-id, and then refuses to read the ecu, because ecu id is wrong. At romraider forum there is busterhax -nick that has done the new ms41 quick flash program. You could ask his help if you really need to read the ecu.

[@jerrynaslund3368]

The link for quickflash does not work.

[@PocezPanda]

Is it possible to delete/diable EWS2 imobilizer with this? Haven't found any good answers on forums, and EWS can be annoying when swapping engines with EWS into a car that doesn't have EWS wiring. :D

[@pazi88]

Yes it can be done easily with RomRaider

[@RecreationAutomotiveGarage]

so since you're using romraider for tuning would the tactrix cable work on the bmw?

[@pazi88]

Probaply not. The ms41 falsh tool requires "dumb" interface that just lets the tool communicate directly with the car. The tactrix cable does the communication itself so it requires it's own specific software to work. Which doesn't support BMW ECU's.

[@dangerousdave321]

Absolutely fantastic videos! I have an ADS to serial port connector I use for inpa, would that cable work with open ms41 as well?

[@pazi88]

No the ADS cable doesn't work with ms41 flashtool. You will need usb-obd2 cable with FTDI chip like this: goo.gl/izh4wE

[@adambean9653]

Hi dude, great videos, could you possibly do one on the control bits section and how to convert from decimal to binary and then back again?

[@MrYlijumala]

Adam Bean there is websites which converts binary to decimal easily. Just google it. And the converting is pretty simple to do by hand too.

[@RonnyScott]

Sweet Video! Have you ever used the galleto 1260? I'm just curious because I've done everything that OpenMs tells you to do(solder the pins, software, xml file, definitions ect ect) right at this moment all I'm looking to do is log, but the tool doesn't connect to the car, any ideas?

[@pazi88]

SuppaNova2012 Sorry I don't have experience using galetto. It should at least be able to do partial reads and writes. But before writing you need to remember to calculate the checksums. (or disable those using romraider).

[@oscararnesen699]

Hey Pazi quick question. After doing a partial write of the original file, the pops and bang and 7.000 rev limiter is not on. The write goes by the book and finishes 100%. What could the problem be? MS41.0 523i 1996 401

[@CJStalev]

Thank you!!!! Good soft!!!

[@GAdam40]

THX for tutorial. Can you make another video about how to tune ms41 ecu for fast deceleration "popcorn mod" ?

[@oldman66]

Thank you for the information. I remap ms41 to support 7k rev and I encountered a problem that the engine can rev to 7k stay in idle but when I running on the road and every time I push rev over 6k then the engine check light on and into the limp mode . Do you know how to solve the problem. Much appreciated. This car was AT to MT swapped.

[@mohamedmostafa-zc5ju]

really i cant thank you enough for this valuable information..... but how can anyone choose between this and buying aftermarket ecu..... i mean what is proc and cons of both of them?

[@pazi88]

mohamed mostafa The biggest disadvantage of ms41 is lack of live tune. You have to shut down the car every time you make a chance. And also the ms41 is harder to tune than megasquirt for example. So for serious big hp build i would go with aftermarket ECU. But for milder builds that are meant to be daily drivers the ms41 is really good because it's very reliable OEM ecu.

[@MrRoki55]

I love your videos

[@pazi88]

Keichi Rokodo Thank you.

[@MrRoki55]

Keep the good work man you deserve more subscribers. Do you have any plans for diesel bmw ?

[@pazi88]

Keichi Rokodo No I don't like diesel engines :D

[@MrRoki55]

I hoped you had some plans :D

[@CosminRotaru]

Hi! Very nice video indeed! Is there a way to see if an ecu was tuned before? I'd like to find out if the previous owner did some changes... Thank you!

[@pazi88]

Cosmin Rotaru There is stock roms available in RRforum. You can try compare yours to similar stock one.

[@CosminRotaru]

pazi88 thank you!

[@ajl0426]

Can flashing be done from inside the car via the ODB2 port if a switch is wired into the data link's 14&18 pins?

[@e36schrauber]

Very nice video . But the chipster Website is not working. What happened there ?

[@pazi88]

Thanks! The creator has died so that's why the server is down. I will do updated video with different tool later.

[@MrNYUNDERCOVER]

can you tune with this or just make small changes to your ecu?

[@pazi88]

MICHAEL MALDONADO Yes you can fully tune with this. You can get it fully working in turbo or supercharger setup also. The hp limiting factors will be the maf and injectors you are using.

[@deejaytonio7577]

Hi pazi, I buy your OBD1 20 pin adaptator from your link but I don't have the switch to enable write mod ? Is it you who add the switch or it's a special cable ?

[@Dracuz123]

Yes, he added it. I did it myself, it's quite simple: just open it and buy an on/off switch and just put it between the bridging wire. You can take a dremel and fit the switch in the case of the cable.

[@SuperJoeTendo]

I swapped my 97 e36 US m52 from auto to manual. What settings do I have to change or download to get the check engine light off and driver properly?

[@pazi88]

The missing auto should not trigger check engine light. Check fault codes what it's complaining about. If it's really only complaining about missing auto, you need to ews sync the ecu to ews unit from manual car, to make the ecu manual too.

[@Pultsari666]

Mikähän ohjaus mahtaa olla -99 e36 320i? Mahtaako pysyä kärryillä minkäänlaisilla ahdoilla vakiona?

[@thesneak281]

Can you use this for diagnostics? Reading and clearing check engine lights? If not what do you recommend?

[@pazi88]

The new ms41 Quickflash can read and clear dtc's from ms41 ecu. And also read adaptations etc. sites.google.com/site/openms41/read-write-41/ms41-flash-tool But if you need to access other ecu's too and like airbag etc. it's better to get inpa cable and sw pack from ebay for example.

[@Saimon5285]

Great video! Could you make the same about ms43?

[@pazi88]

yes I'm planning to do so but I can't promise when I get those videos done.

[@ThaDutchDK1989]

can this 2 work by a e46 328i m52tub28 (europe) ? i taught i read that it has a ms42 i quess with ews ? maybe i can use a ms41 ? cause only difference is dubble vanos and disa. and great video btw !

[@driftbeam8624]

can i tune an ecu with index from m52b20 take this ecu wire on m52b25 head with m50 block that there is m54b30 internals and s52 cams n/a tuning will it work?

[@MrNYUNDERCOVER]

ok, so there is a place on romraider, that says properties and open that? correct and just look for byte 8. what should I change it too? that would turns off the ews or deletes it?

[@pazi88]

Yeah where the properties normally are in windows. if you change the byte 8 correctly, it will turn off EWS.

[@graczek234g7]

hello i don't know if you can read this so many years after, but i have strange problem, i did it like you showed it, partial readed- no problem. when i was trying to write it, it stops on 8%-says it's done, checksums corrected and car won't start. readed ecu again and the maps are not correct, still have the connection to the ecu, looks like the program has problem or the wiring right? i wan't to add i have done one ms 42 with no problems

[@pazi88]

Just try writing again untill it's succesfull

[@graczek234g7]

I was trying 5 or more times and once it stopped 8%, next 5%, other one 2%. Strange thing, earlier i have ordered kess so i am waiting for it. And have hope kess will write it with no problem

[@mattpur8486]

HI @pazi88 it is possible to tune with this ECU turbo engine? Or there is just no way to use turbo engine without KDFI? Thx for response! Like you videos!

[@pazi88]

You can easily tune ms41 to work in turbo engine. You just need maf that is capable of measuring enough air and of course bigger injectors.

[@mattpur8486]

@@pazi88 Thanks for quick response! if i will need i will write you! Already watching bigger injectors video xd

[@mattpur8486]

@@pazi88 Can i ask you what MAF would you recommend? Thank you!

[@Ezrvdu]

Can you use this software to read CEL (check engine light) codes?

[@pazi88]

The tool that you need for flashing can do that: bmwtuningtools.gumroad.com/l/ms41quickflash

[@ANDREW_ACV2]

I want to know English or your language to understand this. I'm from Spain and I have a bmw e36 with the engine broken, and I follow you from the 1st video that you uploaded on how to put turbo.

[@pazi88]

You should definitely learn some English. It's very useful language and Finnish is pain in the ass to learn :D

[@heikkipiippo2213]

Hei! Kiitokset Sulle..saimme säädettyä e36 t.joutokäynti...oli muuten tehtaan säädöllä 90c°...n. 600rpm./min..sammahteli kun kytkin alhaalla käänsi ratista ajossa

[@pazi88]

Ollos hyvä! Toki ei sen pitäs moiseen sammuilla, et oisko imuvuoto tms.

[@heikkipiippo2213]

@@pazi88 kaikki mahd.putket vaihdettu.ja savutestit tehty...nyt ei kertaakaan sammahtellut..😁

[@vwseb007]

What is the switch on the connector? Is that a bridge between 14/18 and 2/17 that enable writing?

[@pazi88]

Yes to to connect Pin 14 to Pin 18 to enable writing.

[@MrNYUNDERCOVER]

ok, even though my #14 has a black wire, I have to jump it to #18? correct? I can put a on and off switch between #14 and #18 and that should do the trick...

[@pazi88]

He colors can be anything in those Chinese adapters. Yes you can put switch between those.

[@wedepeixmen]

hi pazi!! i ve been looking to your videos and are awesome!! im looking for up the rev limiter and after doing everything you did, my m52 engine still on 6500. have i done something wrong?

[@pazi88]

wedepeixmen Did you remenber to apply the flash voltage by shorting pin 14 to pin 18 in the round diagnostic connector/in your adapter.

[@wedepeixmen]

pazi88 that is posibly my mistake!!✌️😉

[@wedepeixmen]

pazi88 hi pazi!! Today i have tried shorting the 14 to the 18 and still on 6500..more than 100 times have seen the video and im doing exactly the same but not the results.

[@Dracuz123]

i think there are some ecus that require more work in order to write the new code - check rom raider forums

[@mistermasterx5913]

Pazi, I already have DCAN INPA cable, Do I still have to jam jamper pin 14 to pin 18 for read and write to my dme ?? ,,

[@Dracuz123]

I suggest opening it and seeing if the pins are already connected. There should be a wire bridging the two pins.

[@nick0man]

Hi Pazi, love the videos. I have the partial .bin file downloaded and am having trouble deleting ews in romraider. What should I change the decimal value in the 8th byte of control bits section? It is '30' stock, I've seen other say make it '22'. Will I ruin the ecu if I mess it up? Thanks so much, coming from the US!

[@pazi88]

Nick Andersen See the text in RomRaider in properties section for that byte 8. You need to know some computer basics to understand that. But I can say the 22 is wrong value :D But you wont brick your ecu if you set it wrong.

[@nick0man]

pazi88 Thanks for clearing that up. One last thing: we were trying to learn the decimal binary conversion and modifying bits stuff yesterday and we came to 158 (If I remember correctly) does that seem right? Or is it specific to each ecu?

[@pazi88]

Nick Andersen That is right value. It depends what the original value is.

[@nick0man]

pazi88 Great! I really appreciate the quick replies. Hopefully it will be driving in no time! Do you have a patreon or similar where I can support your channel? :D

[@thebigmann25]

Do you have to save it as bin? I was sent a remote tune and it wasn't a .bin file, and it worked when i uploaded it to my dme. I am editing the tune in romraider, and wondering if I need to ad .bin onto it for it to work?

[@pazi88]

will martens No you won't need to add that .bin to the name for the file to work. But atleast RomRaider doesn't show the files at file browser that don't have thst written. So it's better to add that.

[@TheJimmy3960]

hi where can i find the flash tool?

[@tyewvarnes]

Just curious, can you read fault codes through the 16pin OBD2 connector in the car with pins 14&18 Permanently spliced together on the 20pin round plug in engine bay? I hear most people leave those wires spliced together and have no issues?

[@pazi88]

Tye Varnes Yes. No problem if those are connected.

[@samia817]

This is a useful note. I went out and bought the switch ready to make the modification then when I opened my adapter up I could see it was already shorted 14 - 18 - then I opened my spare one to check and it was also the same. So looks like most of them come already shorted and the switch is redundant in most cases.

[@pazi88]

That's new info for me. I haven't seen adapter that has those shorted. But yeah it doesn't hurt having those shorted all the time.

[@laakerimauri2498]

en kerennyt hirveesti vielä perehtyä mutta onko tuossa tullut vuosien myötä mitään ongelmia uusien tietokoneitten kanssa pitäiskö toimia ihan kaikilla windows versioilla

[@pazi88]

Toimii kyllä uudemmissakin. Mut kannattaa katsoa aiheesta päivitetty video: kzbin.info/www/bejne/r3W7gXWinZpmfNU

[@mateusz19897]

Hi, can you help me? I have problem with download definitioo to my engine m52m20 with ms410DS3, I can't create accont on romraider, activation mail doesn't come. can You send definition file on mail? please :)

[@MrNYUNDERCOVER]

Was wondering if I can turn off the EWS... if yes. can you tell me how? I have downloaded everything I need,but couldn't find ews....can you please help. ... Thankyou

[@pazi88]

MICHAEL MALDONADO Check the properties for byte 8.

[@xyoungyx]

hi pazzi just done all this to be able to switch off ews on a bmw i have just supercharged the flashtool says looking for cable and cant get it to work vagkkl 409.1 cable any help would be appreciated 🧐

[@pazi88]

You have wrong type cable. It needs to have OBD2 cable with FTDI chipset inside. Not all obd cables have it.

[@xyoungyx]

thanks pazzi i thought the same so i ordered the silver cable with bmw inpa cd.this will work for me now?

[@pazi88]

@@xyoungyx It should. Most of those have the genuine FTDI chip.

[@bourtzalass]

Great video as always, i should have seen this earlier! Is it possible to reach 350hp using ms41 1997 or it is better and easier to use a blanc ecu?

[@mathieutajan2790]

Hello pazi to increase the engine power it is necessary to increase base injection or wot enrichment or both thanks

[@pazi88]

Only WOT enrichment. But it's already too rich in ms41 so you could even try to lean it for more power ( 10% enrichment will give must power)

[@mathieutajan2790]

pazi88 thanks

[@johnny__tran]

Can you use an ms41 in a ms40.1 m50 wiring loom?

[@pazi88]

Yes. But not directly. You need to re-pin the connector.

[@przemyslawtomera8972]

Have you ever used MPPS? I’ve got a ms42 Dme and it reads and id’s the dme fine but I’m not sure if I want to hit the “write” button lol

[@pazi88]

No I haven't. I use mss5x flash tool for ms42 and ms43. More info in wiki: ms43wiki.com/index.php/MS42 Also do you know if the MPPS corrects checksums? If you do any changes, it requires checksum correction. Mss5x flash tool does that on the fly.

[@przemyslawtomera8972]

pazi88 well due to some unfortunate circumstances you can’t purchase the mss5x flashtool anymore and it’s not available for download from what I see. I’d love to get it but doesn’t seem too possible. I’ve had terrible luck with jmgarage flasher and countless cables. MPPS seems to do checksums but I think I’d rather trust Ultimo with it.

[@jerrynaslund3368]

Hi Is there any way to get the siemens ms41 flash tool today ? The guy is no longer with us ☹️

[@pazi88]

Yes: sites.google.com/site/openms41/read-write-ms41/ms41-flash-tool

[@jerrynaslund3368]

@@pazi88 Look like the page is down. Gonna try and email him.

[@mariuszczerwonka5249]

hi, i tried to register on romraider forum but they didn't send me activation email, can uhelp me somehow ? i would be thankfull for help

[@zuze9112]

So i need to plan trip to Finland ?

[@covarix4951]

Hey pazi i am a little Bit confused right now. I have a 1997 e36 with a ms41.0... I wired a obd cable to the ews exactly like on the romraider Forum. Now i just need the obd cable. In Germany we have kcan, kdcan, dcan and many many other types of cables. The one that you have in your description is 1. Only for cars after 2001 and 2. Not available in germany and if i search k-line cable in german ebay or Amazon i just get some weird adapter from round 20pin to obd and one more short obd to obd cable. I hope you Can give me some clearity about all the different cables Amy help me for what i have to go with. Greetings

[@pazi88]

Covarix as said the cable in the link is tested to work.

[@covarix4951]

pazi88 But Not available in germany:(

[@alexandrosargyros8212]

I cant activate a romraider account and I need the ms41 ecu definitions is it possible to email me the XML file??

[@ziReActz]

I'm having trouble with my romraider account activation and I need the ms41 ecu definitions is there anyway you can email me the XML

[@b.1z966]

Something i want to ask you for advice and your opinion. I drive a 1997 BMW E39 with m52b28 engine, automatic steptronic transmittion. Engine is in god condition, does not burn oil, it is stil inside factory limits, runs great and smooth. I am preparing to make some changes to the engine, and a would apriciate if you have the time to help me with some advice. I am planing on changing and installing on my engine the folowing parts: Intake manifold from the M50B25, with cold air intake of course Camshafts from S52B32 and i am wondering will they fit, i know i need to make changes to the gears to fit, because they are a litle longer, but i am not sure if the valve then will hit the piston, because of much longer lift. Standard lift on my cams are: M52B28 Intake 228* 9.0mm lift / exaust 228* 9.0mm lift S52B32 intake 252* 10.2mm lift / exaust 244*n10.2 mm lift Or should a put the M54B30 cams with duration 240/244 deg and 9.7/9.0 mm lift. M54B30 Crankshaft and with this i will incrise stroke from 84mm to 89.6mm, conecting rods and pistons remain standard. Injectors are standard 250cc but should i put bigger injectors and from what engine or manufacturer? Your recomendation? In the end my friend will do ECU remap, with help of your video of course :) I am hopeing that with theese changes i will get about 250+ HP on the wheels I know this is a lot of questions but any advice from You on this project is much appreciated Thank You in advance.

[@pazi88]

s52b32 camshafts are bolt-on. I have those in the e36 shown in the video. Those are very good cams and make easily 240hp from crank and more with other mods and tuning. But getting +250 hp from wheels is just dreaming... Only thing that suffers at least in 2.8 litre engine is idle but you can just raise it something like 200 RPM. The stock pink tops are not 250cc more like 220cc or close to that. And those won't be enough for you. I did run out of those injectors with the s52 cams and stock 2.8 displacement after playing with cam timing.

[@b.1z966]

Ok, so wich injectors would you put in this configuration, any recomendation? And what do you think about installing M54B30 Crankshaft to... bdw, thanks for the advice :)

[@pazi88]

Bozidar Zoric Basically any injectors that fit and have high impedance are good. I have bosch 0280150830 injectors and I have tuned the ecu for those. So if you wan't easy swap buy those and I can give you working fuel maps. I also have video coming how to tune the ms41 for different injectors. And you should definedly do the m54b30 rotating assembly swap. I also have video coming about that, but lot later and it's not going to be what people normally do ;)

[@b.1z966]

I was talking with some friends and did some research. I decided not to do anytging with the e39, but to buy another car and start that as a project car. Friend of mine has a 1994 black Bmw e36 M52B25 with bad engine(overheated and blown head gasket) and he will sell it for cheap. As i said i did some research i came up with this configuration : M50 Iron Block (or maybe M52 Aluminium block, it is lighter but Iron is Iron if you know what I mean :) ) M54B30 Crank Pistons and Rods, M52 Cylinder Head, S52B32Inlet and Exhaust Camshaft, Refurbished B28/M3 'Pinktop' Injectors, M50b25 Inlet Manifold, M50b25 Throttle Body, M20 Lightweight Flywheel, M3 3.2 Exhaust Manifolds and Single 2.5" Exhaust System (No Cat). Cold air intake with performance air filter, Stock MAF, Stock M52B28 'Siemens MS41' ECU with modified calibration file. I hope that this will be god, but some things maybe changed along tha way. loking forward to see those new videos you mentioned. Keep up the good work. All the best to you :)

[@101088kaka]

Is there any guides on how to convert a ms41.0 to a ms41.2?

[@pazi88]

www.romraider.com/forum/viewtopic.php?f=42&t=13063

[@weedi696]

thank you for sharingI'm having trouble with my romraider account activation and I need the ms41 ecu definitions is there anyway you can email me the XML or direct download link, any one can help please

[@mathieutajan2790]

Hello for the socket 20 pin you have inverted pins 14 and 18 or you only connect the wire of pine 14 on pin 18 thanks

[@pazi88]

There is jumper wire between pin 14 and 18.

[@mathieutajan2790]

pazi88 Ok so if I understand well I made a bridge between pine 14 and pine 18 and I add a button on off the bridge wire thank you

[@pazi88]

mathieu tajan Yes that's right.

[@mathieutajan2790]

pazi88 thank you very much

[@GFXRadiant]

Does the new link work?

[@mateos3607]

hi there....i have a question please...my car was a e36 320i m50 and i swap the engine for a m52b28....everythink works good...my problem is i can not read anything when i put the plug for reading problems and codes....what can it be the problem...i have done a remap and the tuner had to make everything and see everythink only direct from the ecu pluged to hes computer because he could not come in from this obd plug ....

[@tangomanwx]

Hi I have done the same engine swap Into my 1994 320i, but am only running with 320 ecu. How did you bypass your ews on the 328 ecu,did you buy an eprom? My donor was a 1996 328 Help appreciated John Irl

[@mateos3607]

@@tangomanwx my friend i change the hole engine wire i buy it from 328i And plug in the 328i ECU... Then i send the ECU to an expert to bypass some codes So that i Can run the car with my key...

[@PROSHOOTERNL]

The Ms41 tool is no longer available because the website is offline. Can you please share the download/exe with me? Nice vids btw

[@pazi88]

Here is new flash tool: sites.google.com/site/openms41/read-write-41/ms41-flash-tool It does the same as older one, but partial flash is even faster.

[@helpster6403]

Hey where can i get exactly this software ? like i read the original creator died last year and today you only can get an version that aguy made from data that the original maker of the quickflash sent him... Is this safe to buy or what should i do ?

[@pazi88]

Hel pster Yes the quickflash is the sw to buy. It does same things and bit more than the ms41 flashtool.

[@helpster6403]

perfect. Thanks i bought it. Really fast and nice communication with the seller.

[@GTO2800]

I bought a cheap 1999 MS41.0 for testing, because my car (M52B28) is 95 and the ECU is not flashable. If I manage to disable the EWS, is it safe to change the ECUs? Like mileage differences or pinouts?

[@pazi88]

GTO You can change to any ms41 ecu. Just flash it with correct software. You don't have to disable ews. You can just sync the new ecu with the cars current ews box. And you will need to do that if there is manual/auto mismatch. There will not be mileage issues etc.

[@GTO2800]

Thanks for your answer! I will try that :)

[@GTO2800]

Thanks a lot, I got it working! I used your 328i Stock Tune from RomRaider :) Cant wait for future videos, it would be interesting to learn the general approach to tuning, after you installed a M50 Manifold or a set of cams for example.

[@JuankaRDI]

Hello pazzi88 a great job. With the ms41.0 ecu you could get cut? Like the ms41.1 of American m3?

[@pazi88]

JuankaRDI Sorry I don't understand what you try to ask.

[@JuankaRDI]

pazi88 How could you put an injection cut with good sound in ms41.0. sorry google translate.

[@pazi88]

JuankaRDI Adjusting the RPM limiter hysteresis. It's not currently defined for 41.0 in 0.43 definition file. But it should be in next 0.44 definition file.

[@JuankaRDI]

pazi88 with winols or tunerpro is posible?

[@pazi88]

JuankaRDI Yes also with those if you know the adress for the hysteresis.

[@HydeMotorWorks]

Greetings, Is there anyway to get in touch with you, an email perhaps? I am an old school man and have a few projects going on with superchargers, am familiar with the software and base aspect of these ecu's but always could use a friendly adviser to things as these.

[@pazi88]

My email should be visible here: kzbin.info/door/6THnBhg-DYtclcRqt8UqHwabout

[@oscararnesen699]

Hey PAZI! Quick question. I can’t open full read files in romraider. I can only open Partial.bin (1429861) e39 523i

[@pazi88]

Yes that is on purpose. Full read files aren't meant for tuning. Partials only.

[@oscararnesen699]

@@pazi88 Thank you for quick answer! What are the full reads for then?

[@pazi88]

@@oscararnesen699 Full reads store the program code and other non-tube related info, so only needed if you want to do changes there. Usually used to change software version. But you have the newest for ms41.0 anyways.

[@oscararnesen699]

@@pazi88 Thanks again. Is it possible to make launch control on MS41.0 or do you have to convert to MS41.2?

[@oscararnesen699]

Last question, Can you put (1429861) DME code onto a (1432401)? Or is that a no go?