Hacking the Motronic ECU (Audi RS2)

[porkkis]

Faheemo I can raise the limiter no problem.

There are no separate wot maps in our cars. There are some correction maps that are not read before certain load thresholds has been passed.

[cartune]

Yes indeed cut-off - one cell, I picked it empirically.
Many thanks for your reply.

By correcting for reaching a certain load, as I understand it, it maps 3A-3F, with the axis 3F must begin with a particular importance - the border early correction? How many such cards for the correction of the ignition? I understand that nobody wants to share information, but the issue for me is very urgent.

[cartune]

I assume you was the one who requested s2dude to remove the info he wrote. That's someting I'd consider opposite to helping.

I've been thinking about programming a hondata type sw for my own joy. Finding a reasonably priced emu is the problem. Xtronics has its problems too...

Let's give some more hints to cid to keep him going. 0x3A, 0x3F, 0x38 and 0x37 are figured out correctly.

Let's give some more hints to cid to keep him going. 0x3A, 0x3F, 0x38 and 0x37 are figured out correctly - thanks. Can you say what is 0x36?

[newborg]

RS2.xdf link

This link is dead, see below. Does anyone have this file RS2.xdf? [/email] . TIA


dead link http://www.uploading.com/files/UKVPL5JR/RS2.xdf.html

[newborg]

Let's give some more hints to cid to keep him going. 0x3A, 0x3F, 0x38 and 0x37 are figured out correctly - thanks. Can you say what is 0x36?

36 - Voltage
37 - Air Temp
38 - Head Temp
3A - RPM
3F - Load

[cartune]

Thanks. Where you take this information?

[newborg]

I bought this. It is a map editor & came setup for rs2

http://www.theProDMEeditor.com

[S2central.net]

Interesting... does it cover both chips ?

If I had more money I would buy it to cross-check against my own info and see what else can be gleamed from it. Seems a very new product. Could be great or could be useless. Tread carefully would be my advise.

[prj]

Looked at it also a while ago. The fact, that it is written in Excel/VBS is a bit "meh" to say the least.

[S2central.net]

My bet is all they have done is translated the map directories found on some motronic chips... This doesn't work for S2/RS2 turbo chip. Nor does it find some really useful things like fuel injector constants. I wrote a PHP script to parse the entire motor chip and build a map definition file for the package I use now. Took a while to have it calculate scales and such but it worked a treat I only found out about the map directory after writing all that code, but it was a useful sanity check. Then you discover that everything you need is not referenced in the map directory anyway.

If this aftermarket package has unlocked all the tricks for S2/RS2 on both chips then its worth the money, but I would be surprised if that is the case.

[prj]

I probably should start writing something similar.
Issue is, I probably need an emulator to understand it all, since just going off the disassembly is quite difficult.

[S2central.net]

Disassembly will turn you crazy... I made little progress with that... Working blind without documentation of address maps and stuff gives you a very sore head. Lets not forget there are three microcontrollers in our ECU.

[newborg]

It comes with these original files and the configuration files that make them work.
0261200484_1267356530_A810_Audi_S2.bin
0261200484_1267356560_A7C8_Audi_S2.bin
0261203478_1267358361_762B_Audi_RS2_Turbo.bin
0261203478_1267358361_81C6_Audi_RS2.bin
0261203543_1267358668_64DC_Audi RS2.bin
0261203601_1267358373_54CC_Audi S4.bin
0261203601_1267358373_5AEA_Audi S4.bin

I was able to edit my idle 100rpm.

[prj]

Interesting...
I still don't like the fact that it is written in Excel/VBA though.

It would be much better to just make a DAMOS for WinOls.
I have started with that by looking at different images of the chips, but without slow and painful disassembly or an emu with trace I'm blind.

[cid]

Long time I don't check S2 forum, someone really brought this topic back to life...

Anyway, it is been more than 3 years I stopped working on the RS2 bin file, couldn't find all the info I need plus I sold the car.

I will just upload the xdf file once again in case someone need it.

http://uploading.com/files/c1mc75c8/RS2.xdf/