karel5000
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« on: August 28, 2012, 04:27:49 PM »
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Hi,
i am looking for the Bosch Specifications of Motronic 2.3.
Thanks for Your help!
Karel5000
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prj
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« Reply #1 on: August 29, 2012, 07:08:55 AM »
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If you find them let me know (not likely).
They certainly do not exist in electronic form in the wild, only on paper.
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karel5000
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« Reply #2 on: August 29, 2012, 03:34:52 PM »
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I strongly believe, that someone has scaned them already  |
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matchew
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« Reply #3 on: August 29, 2012, 10:37:08 PM »
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I strongly believe, that someone has scaned them already Then 'who ever' scanned them should post them. |
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prj
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« Reply #4 on: August 30, 2012, 12:17:32 AM »
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I strongly believe, that someone has scaned them already And I believe you are wrong. I have done 100+ M2.3.X cars incl. full disassembly of these ECU's and modification of factory code to support 800+ hp. Maybe a good idea is to ask what you want to do. |
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karel5000
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« Reply #5 on: August 30, 2012, 03:46:26 PM »
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I woud like to tune a bit my car. Disassembly without knowledge of the Motronic structure, it takes too much time...
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prj
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« Reply #6 on: August 30, 2012, 05:45:49 PM »
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For a stage 1 chip it is enough to modify 6 maps in the ECU. Modifying more will yield a better result, but the basics are pretty easy. Go to www.motronic.ws - it contains everything that is needed to get started. Also, you can use a tool I wrote. I have attached the binary. It will find all maps in the fuel/ign chip and generate an XDF. The boost/knock chip you will have to find out yourself, but if you have emu with trace, it is not hard. And if you don't have emu with trace, then you should not be doing this anyway. |
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karel5000
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« Reply #7 on: September 03, 2012, 06:06:20 PM »
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Thanks very much for Your help!
I would like also to know, how the control of the Motronic 2.3 looks like, how the maps with corrections are connected together... Can You also help me to find some specifications, please? Without this knowledge is tuning a bit dangerous...
Thanks!
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prj
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« Reply #8 on: September 04, 2012, 12:43:18 AM »
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I already told you there are no specs in the wild.
I learned by full disassembly.
I will answer concrete questions, but unless you manage to find out the basics yourself, I am not going to waste my time, sorry.
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karel5000
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« Reply #9 on: September 04, 2012, 11:58:23 AM »
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I know the internet site, You wrote me. I know that basics...
If I need something concrete, I will write You. Thanks.
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Acki
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« Reply #10 on: January 11, 2013, 09:52:16 AM »
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Won't start a new topic. Is it possible to get a list of the descriptors?  |
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prj
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« Reply #11 on: January 11, 2013, 11:13:49 AM »
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Some descriptors are assigned dynamically, and then used only for one map lookup in a temporary variable.
If you want to learn what is what, you will have to disassemble the measuring block routines, and then correlate that to the OBD blocks.
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Acki
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« Reply #12 on: January 16, 2013, 04:51:04 AM »
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That's the problem. The M2.4.1 from the V8 don't have measuring blocks like other motronics.
I have one group of 10 values, rpm, ignition, lambda correction and a lot of other stuff for the idle control (maybe MAF signal, I have to check in vehicle), that's all.
I know that there were functions for the A/C detection etc.
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prj
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« Reply #13 on: January 16, 2013, 05:56:20 AM »
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That's the problem. The M2.4.1 from the V8 don't have measuring blocks like other motronics.
I have one group of 10 values, rpm, ignition, lambda correction and a lot of other stuff for the idle control (maybe MAF signal, I have to check in vehicle), that's all.
I know that there were functions for the A/C detection etc.
The 3.6 PT does not have measuring blocks. The 4.2 V8 does. But go on and disassemble the AAN measuring blocks in 2.2T, the ram values are mostly the same. Hint: JMP @A+DPTR This will also help you: http://www.blafusel.de/obd/obd2_kw1281.html#7ID is always pushed into the buffer first, then A, then B... Go through the ID's and you will understand what is what and how to convert the RAM values to real values in the ECU. |
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« Last Edit: January 16, 2013, 05:59:24 AM by prj »
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Acki
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« Reply #14 on: January 16, 2013, 07:33:50 AM »
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I no expert at the 3.6 V8, but some has problems to connect with VAG COM. At the 4.2 V8 I have this values: http://www.lovania-it.de/audiv8/repleitfaden/site/b_site/rep-1257_1.jpgCoolant temp, load, rpm, ignition and some idle values. How ever, I only found this VAG COM picture.  At the V8 I only have the first line with the 10 unnamed "cells". I only have the Group 0 and nothing additional. Maybe I can hack the code to get more information Of course, informations are nearly the same but not "translated" is this nice looking. Here the 5cyl has some more groups: http://s2central.net/vagcom_4.html |
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« Last Edit: January 16, 2013, 07:36:42 AM by Acki »
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