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Author Topic: B5 S4 euro 8D0907551C xdf updated  (Read 2315 times)
edwink89
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« on: June 05, 2023, 02:27:24 PM »

Hi community, as a complete newbie i am trying to define as much as possible the C box, i researched several hours and found this:

http://nefariousmotorsports.com/forum/index.php?topic=3004.msg29517#msg29517

I do not want to resume a 10 year old topic so I started another topic about the C box (please don't kill me  Embarrassed ) as i know there are already several ones. The last message listed starting addresses of various tables/scalars so i wanted to add them to my xdf file.

I wanted to warn that I think some of the addresses in that post are wrong:

KFMIOP (written 2 times, one is wrong, the other is right)
130D6 WRONG
130D4 CORRECT

LAMFA
1B8CF WRONG
1B8D0 CORRECT

KFLF
189FB WRONG
18FC8 RIGHT

KFDLULS
196B1 WRONG
196B3 CORRECT

KFZWOP
1577C WRONG
1577D CORRECT

KFZWOP2
1582C WRONG
1582D CORRECT

As somebody here suggested, one thing that can be done is to start from the M box and to modify that as we all know is fully defined.
I started in doing that changing the addresses but i encountered a problem with KRKTE (18D61).
The differences are these:

C box
- size 1 byte
- LBS first unchecked
- significant digits 2
- conversion 0.01*X

M box
- size 2 bytes
- LBS first checked
- significant digits 5
- conversion 0.000111*X

After trying to play a bit with those parameters/values i started thinking that there may be too much differences to take for good the same conversion expression and the other things and changing only the address. You can see in the 2 photos attached the results, I think that makes more sense the 0.55 ms from the original xdf than the 2.19 ms from the M modified.
What do you guys think about that? Many thanks.
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edwink89
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« Reply #1 on: November 17, 2023, 03:21:35 PM »

It took me a while but here it is, attached the updated C box xdf, it is not fully defined as the M box but in my opinion it is a good definition file. I will try to keep it updated as i modify it/add new parameters. I hope it will help somebody.
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edwink89
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« Reply #2 on: February 05, 2024, 08:56:10 AM »

Updated definition file, added a few maps Smiley
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edwink89
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« Reply #3 on: March 25, 2024, 04:44:48 AM »

I searched for a cauople of 8x8 maps but can't define them.
They are starting at 158F3 and 15933.
Of course that's for the ecu in subject, C box.
Can anybody help telling me what maps are at that locations please?
Thanks.
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