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Hairyscreech

Also I found a DAMOS for the M3.8.1 used on the NA VR6. It is about as close to a DAMOS for this ECU as we are going to get. I will switch the 1.8T DAMOS on the sheet out for this one as I think this one will be more helpful. I also discovered I have a 4gb map pack and a large pack of DAMOS files fo...

Hairyscreech

Your right you need to adjust your ignition if the missing teeth are at 60 degrees. What your missing there is that the *0.75 is assuming all 60 teeth are present. You only need to do 60*.75 However you really need to pop the pulley on the engine, put it to TDC, mark the tooth inline with the rank s...

Hairyscreech

It's not a constant, that -60/45 degrees only applies to the M50tu and onwards. The M20 and M50Nv has a different offset as it is calculated from the position of the missing teeth on the cam trigger pulley. Braking down the equation: Each tooth is read as 4 data points on the rising side and 4 data ...

Hairyscreech

Beware of putting in 0xFF or 0xFD as both seem to cause a bit of a fuss in the processor. One is the code for reset and the other is the code for NOP, they shouldnt be interpreted as code due to their location but both seem to be a problem in some tables. If in doubt just go for 0xFE as that seems t...

Hairyscreech

First off, you are all welcome to the information dumped in that dropbox. It is all built on the freely available knowledge already on the web so without people providing the initial information for free that stuff would not exist. Projects like these can only ever progress through freedom of inform...

Hairyscreech

After some trouble over the weekend getting the car to run well it is clear the biggest issue we face is not being able to log data properly from these ECUs. The hit tracing is good but is never going to provide the level of detail that we need to find faults and 1 man tune these early motronic ECUs...

Hairyscreech

I a bit of a bid to keep my enthusiasm up I have decided to set up a dropbox to house all of the tuning stuff I have you can get access to pretty much everything I have on these ECUs here and I will try to keep things updated and add stuff when I can. If anyone has any useful stuff they want to stic...

Hairyscreech

Having 4 very big problems with the.. - "Acceleration enrichment table" feels to me it is not actually acceleration enrichment, but it affects to it. I did some tests at last summer, and IMO it's not for it or it is very tricky to use to adjust accleration enrichment. - There is one or fe...

Hairyscreech

Having 4 very big problems with the car at the moment and not being able to solve these issues is preventing the use of the car. 1. Can someone explain how the "acceleration enrichment" table works? The biggest problem I have is that the fueling is all over the place on acceleration. Curre...

Hairyscreech

A solid understanding of the axis is needed for this one, and probably a good look at how Motronic treats load. Take a look at the axis info here: https://web.archive.org/web/20111016024531/http://www.motronic.ws/map201.htm And here: https://web.archive.org/web/20111016023000/http://www.motronic.ws/...

Hairyscreech

Regarding the ignition timing - What do you have for your conversion factor? You wont be able to use the 6 cylinder conversion factor as it is based on the distance before TDC cylinder 1 that the missing 2 teeth are. Which is why it is X-60*.75 The -60 is the number of degrees before TDC that the mi...

Hairyscreech

Here you go - One zip file containing a modified alpina tune to work with the 506 XDF, one 506 M3 BIN and the matching XDF. I have also saved the latest copy of the sheet to open on a page showing the alpina tune against the 506 tune, with a column displaying the numerical differences and and change...

Hairyscreech

The literature on the ECU does state that the ICV is used to help prevent harsh snatches on overrun. A clumsy snap shutting of the throttle on a high engine braking RWD car can be disastrous and lord knows the world is full of clumsy drivers. Your right about trying to control the vacuum high vacuum...

Hairyscreech

I think a lot of what has been posted on the M3.3.1 ECU should help with the B30 engines ECU. It is only an M3.3 with an added vanos controller computer. Best thing to do would be post up a stock BIN and when I get a chance I will see how it lines up with what we know about the other M3.x series ECUs.

Hairyscreech

TBH even my currently unmapped M3.3.1 on the M20 is better and more responsive than the M1.3 was. Already gone is the minor hesitation you got with the AFM system. The old M1.3 is an ok system but suffers from the mechanical nature of the air flow sensing and the ignition. I have already found the b...

Hairyscreech

From what I can tell so far there is a lot of similarities. They did not reinvent the wheel when they went to a new system, pretty much carried over as much of the old version as was applicable and added/change anything they needed to suit their needs. It is why so much of the info on the old 1.3 E3...

Hairyscreech

OK, got it, would imply a 124mph speed limiter.
What led you to that location?

Hairyscreech

Checks out, I have the same 3 bits here on the alpina BIN with the middle of the 3 set to 0xFE, we know the Alpina was advertised as not having the limiter so having it set to the highest functional value makes sense. Oddly the 506 M3 bin has 0xBE and the 413 0xAF. Implies the US M3 has a higher lim...

Hairyscreech

Nothing much yet. Only able to grab a few spare hours here and there recently. Started looking at those RAM dumps to compare the changes in the different ECU states (off, idle, running and rev limiter), want to track those back to the code sections that write to those RAM areas. Might allow us to ac...

Hairyscreech

Fair enough, your right the E36 does seem to be the one that dominates the drift cup at the moment. They are also plentiful and cheap in 323,325 and 328 form. (we are also not ones to tolerate an auto box). A friend of mine runs a boosted E30 in the drift cup, it has proven to be a challenge getting...

Hairyscreech

All OBD2 ECUs that use onboard flash memory need to be flashed in situ or bench flashed, provided you have the tools to do this then you can edit these ECUs. I believe Romraider may be more useful for the Siemens MS4xx ECUs, it certainly seems to be what they use more on the M52 Z3s. For OBD1 ROM ch...

Hairyscreech

If you need any help getting hold of INPA or setting it up then let me know, its a fussy thing as it was only meant to work on an IBM T40 with the BMW Diag head set up. You will need an ADS signal converter for these ECUs (and all obd1) the best/most economical for what we do is the tiny ADS from th...

Hairyscreech

Confirm codes are 6 bits long. Disassembly says there is only one reference to register 1038, at 0x4693. The first 2 bits come from register 54, the second two from register 56 and the last two from register 26. Edit - Can we assume from that the data is coupled into 3 pairs? I note the first number...

Hairyscreech

Your right, I am being dense, strange morning. I even used a list that gave both the Hex and Dec values to check the DTC and INPA codes. The blink codes are written exactly as the ECU would spit them out to the dash but the INPA codes are turned into Dec values before being used. I have not consider...

Hairyscreech

BMWs INPA software can read this all "live", it has a section in the fault diagnostic section that allows you to read a section of the RAM from specifed address to specified address. Not the most helpful though as you cannot take a snap shot of the data, which is what you need really if yo...

Hairyscreech

The 40x non vanos ecus should be very similar, the layout of the data looks the same but the processor is the older 8051. Perhaps there is some milage in looking at the code of the 40x ecus to find the function of a few more maps? The 8051 code is better understood and easier to disassemble. I have ...

Hairyscreech

Odd, did you do that in tuner pro or in HxD? If it was HxD then you need to watch that you overwrite the section you wanted to edit and not add it. PM me both your BINs and I will see if I can solve that. I wont be able to test it though, it's pitch black here and half the Irish sea is falling from ...

Hairyscreech

The DTC codes seem to be all off (0x00) at the top of the 404 data set, and all off bar the vanos warning for the 413 set. Could this be the initial condition? I know the vanos throws a code if it does not respond as expected on power up/start up. I thought the blink codes were identical in both sec...

Hairyscreech

All the sections start with those self references and your right I don't think they are for the ECU to identify the sections. The copy of the DTC tables further up in the code gave me a hint so I did some more digging today. That section at the bottom has 5 addresses in a human readable format. Unde...

Hairyscreech

Just solved it by aligning my popup notes. The first lot are the DTC codes. That 0xC9 10 is nothing to do with the speed limiter, it is as suggested INPA code 201, lambda. See the list here and compare them to the numbers before the 0x00 or 0x10. 0 or 10 must be if it is active or maybe if it throws...

Hairyscreech

I see no reason no to include the 404 BIN, after all it is from the M3.3 base version of the ECU that the M3.3.1 came from. Personally I am not sure how much time I will get to bash at the 404 maps but some work would probably be beneficial. If you want to type the names into the sheet and highlight...

Hairyscreech

Heeeeeeeeerrrrrrrrrrrreeeeeeeessssssss update! http://www.filedropper.com/413and506mapsandnotes-17-11-05 Just spent the last few hours going over DTC codes and adding clickable ID tags to the spread sheet. Think we will be able to match this order up to the triggers in the code anywhere? There are a...

Hairyscreech

Working on all of this. The stomp code area works out, all the codes are little endian 0x12xx. This matches the known format for the stomp codes so I am tagging the spread sheet with all the known codes. If these are the outputs then I expect there is an area that is laid out in exactly the same ord...

Hairyscreech

In that case by nature CE can only be RPM based. It slightly begs the question why have 2 RPM values? I could be wrong but I think the CE refers to location 0xCE which is a RAM location. Same for D0, C1 etc etc. Which again begs the question why double up on the RAM locations? My thinking is that th...

Hairyscreech

Yep, the 413 BIN on the excell sheet has as much as I know of that area right now. It contains the ECU number, the ECU chip number and the BMW part number. The hex needs to be converted into ASCII and then read backwards. :rol: (cause that's convenient). Would love to work out what the rest of it me...

Hairyscreech

I finally uploaded the new 413 XDF and my axis calculator.

Take a look at the updates thread and you will find both of them with the notes that you need to turn your lambda off and fix your load axis.

Hairyscreech

Curious how you decided CE was RPM? Is there something in the 404 BIN that gives it away as so far it has been a mystery? I have updated the 413 XDF to have all the same info as the 506 XDF that I was using and have moved my M20 mapping over to the 413 red label BIN so we can all work/test from the ...

Hairyscreech

I was just going to take a look at these BINs after your comments in the other thread, I just had a thought though, these files should have the same ID at the end as the 413/506 files. There should be a small table down in the 0xFF00 range that lists the start of each of the data sections, it also p...

Hairyscreech

Oh and I forgot one thing, I (badly) translated and added a M3.82 DAMOS for a VW/Audi 1.8t to the excel file. This ECU used the same processor as the one we are working with. I would expect a lot of the programming to be similar, I have been wondering if it will give us some hints as to what might b...

Hairyscreech

Here we go then....... http://www.filedropper.com/413and506mapsandnotes-17-11-02 Tons of little additions done to the sheet, I have put most of the things in the change log. The Alpina BIN reveals a lot of interesting info. Key points: - The code section is the same as the 413 silver label - The tab...

Hairyscreech

For such a simple steup it's certainly provided some good data. Are you not finding that you have every DTC code under the sun stored in the memory? I have found a few more things so I am adding them to the excel file at the moment. Also discovered how to make a little text popup appear when you cl...

Hairyscreech

For such a simple steup it's certainly provided some good data. Are you not finding that you have every DTC code under the sun stored in the memory? I have found a few more things so I am adding them to the excel file at the moment. Also discovered how to make a little text popup appear when you cli...

Hairyscreech

I was going to pick up your 404 file and add it to the excel document. As it is an 8 cylinder file and nearly identical hard ware I was hoping from some code examination that we could pick up where things like the cylinder angle offset, number of cylinders, firing order, injector sequencing etc is s...

Hairyscreech

Your right, any undefined space needs to be filed or the file size will not be correct and obviously everything would be in the wrong place as there would be nothing taking up the free space. Its just a question of how the ECU treats an FF value, possible it just disregards it, which is why FF need...

Hairyscreech

Unfortunately I cannot take credit for that bit, it was olafu. It's well worth getting a handle on the hex and how the system thinks, it makes it a lot easy to play with the system. That excel file probably has everything you could need to understand the current state of the art as I have been colle...

Hairyscreech

Yeah that will do it. 2 options then: 1, disable the EWS or 2, put the maps into a non-EWS BIN.

PM sent with Email.

Hairyscreech

Take a look at the updated excel file I just put onto the other thread, it has 4 tables indicated for the 413 ECU. What ever load value you put into those tables is the point the ECU begins the open loop for that lambda sensor. There are 2 tables of 6*1 and 2 tables of 4*1, I think they are front ba...

Hairyscreech

How come you did an ECU swap? was there a problem with the Alpina ECU? You can probably copy your map data over to a non EWS US M3 BIN and get around it that way. Otherwise I would be happy to take a look at the BIN and see if I can help as it will also feed back into the work going on to finally un...

Hairyscreech

Your right, any undefined space needs to be filed or the file size will not be correct and obviously everything would be in the wrong place as there would be nothing taking up the free space. Its just a question of how the ECU treats an FF value, possible it just disregards it, which is why FF needs...

Hairyscreech

:) I will convert it over to the 506 XDF and have a play later in the week. Just trying to get the updated xlsx sorted, the table of tables is not filled out correctly for the 413 yet, it was copied over from the 506 page and so the map names are not in the right places as I only adjusted the locati...

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