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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 11-05-2012, 12:53 AM   #101
daniel_f.
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whats your current software version? i translated the ****55 tunerstudio file to different software versions.
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Old 11-12-2012, 10:54 PM   #102
TerraPhantm
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I have been studying the MS45.1 tunes a little bit - mostly comparing ZHP and standard 330i software. I believe I've located the speed limiter and possibly the rev limiter.

Here are the binaries:
gone

I believe the speed limit is a 16-bit value stored at 5F44 (and repeats again at 5F46). I believe that this value equals speed * 0x7D.

On the 330i, the value at that location is 0x6480. 0x6480 / 0x7D = 0d205. 205km/h is just about 128mph.
The value for the ZHP at that location is 0x7A00, which ends up translating to 250kmh or ~155mph.

For RPM... from 60D4 to 6140 you have the following (ZHP and then 330i)

ZHP
Code:
1A 90 1A 90 1A 90 1A 90 1A 90 1A 90 1A 90 1A 90 1A 90 
1A F4 1A F4 1A F4 1A F4 1A F4 15 04 15 04 15 04 15 04 
1A 90 1A 90 1A 90 1A 90 1A 90 1A 90 1A 90 1A 90 1A 90 
1A F4 1A F4 1A F4 1A F4 1A F4 1A F4 1A F4 1A F4 1A F4 
1A 90 1A 90 1A 90 1A 90 1A 90 1A 90 1A 90 1A 90 1A 90 
1A 90 1A 90 1A 90 1A 90 1A 90 1A 90 1A 90 1A 90 1A 90
330i
Code:
19 78 19 78 19 78 19 78 19 78 19 78 19 78 19 78 19 78 
19 78 19 DC 19 DC 19 DC 19 DC 19 DC 19 DC 19 DC 19 DC 
19 78 19 78 19 78 19 78 19 78 19 78 19 78 19 78 19 78 
19 78 19 DC 19 DC 19 DC 19 DC 19 DC 19 DC 19 DC 19 DC 
19 78 19 78 19 78 19 78 19 78 19 78 19 78 19 78 19 78 
19 78 19 78 19 78 19 78 19 78 19 78 19 78 19 78 19 78
1A90 = 6800
1978 = 6520

Seems to correspond to the RPMs. What I don't quite get are the values in the middle that don't quite match (bolded). 1AF4 and 19DC both correspond to the rev limits + 0x64. And then the ZHP has a couple values in the middle that are way low (1504 = 5380). Not really sure what to make of that. But I do believe that block of numbers has to do something with the rev limiter - the rest of the differences in the tune seem to be either checksums or maps. By and large the tunes are very similar. That block of RPMs is the largest block of differences.
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Old 11-13-2012, 12:45 AM   #103
Hornung418
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Very cool, TP.
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Old 11-13-2012, 04:09 AM   #104
GrafSpee
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Is great what you have done.
As you have read the software?

Often the limiters are not in the clear there.

Example:

52000 = 6500 rpm (CB20)
52000 * 0.75 / 6 = 6500 rpm

greeting
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Last edited by GrafSpee; 11-13-2012 at 04:27 AM.
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Old 11-13-2012, 01:59 PM   #105
TerraPhantm
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Quote:
Originally Posted by GrafSpee View Post
Is great what you have done.
As you have read the software?

Often the limiters are not in the clear there.

Example:

52000 = 6500 rpm (CB20)
52000 * 0.75 / 6 = 6500 rpm

greeting
Rene
Well, there are a few more differences, but the changes seem too "random" to signify different rev limits.

btw: 3/4 * 1/6 = 1/8. 52000 / 8 = 6500
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Old 11-13-2012, 05:44 PM   #106
GrafSpee
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The calculation was an example of a specific control unit.
The ratio can vary as far as I've noticed that.

How did you read the file?
WinOLS the file can not assign the MS45.

greeting
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Old 11-13-2012, 10:34 PM   #107
TerraPhantm
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Quote:
Originally Posted by GrafSpee View Post
The calculation was an example of a specific control unit.
The ratio can vary as far as I've noticed that.

How did you read the file?
WinOLS the file can not assign the MS45.

greeting
Rene
I converted the 0DA files from the Intel Hex format to a binary. I don't have the OLS277 module so I couldn't verify that all the bits are the same order as they would be in a ROM dump. All the data should be there however. If I could get access to someone else's dump, I could probably figure out how to fully convert the 0da files.
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Old 11-14-2012, 02:36 AM   #108
GrafSpee
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I wanted a try at GS20, because I can not read the Transmision.
I do not know how to correct for the *. ODA the checksum.
In WinKFP there is an option, because you can get the correct checksum.
Do not know if that works.


If you make an update with WinKFP, for example MS43 ....

From version 430037 to 430037, it only writes to memory. (4 minutes)
From version 430037 to 430066, then it writes memory and system. (25 minutes)
With the same version, only the memory is written.
I think.

greeting
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Old 09-30-2013, 10:25 AM   #109
BMWinLinE6
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Sorry to wake up an old thread.. have you folks figured out the rev limiter? Anybody successfully changed that block of value and flashed the module?
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Old 06-11-2014, 01:32 PM   #110
3.slow
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This thread is disappointing at best
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Old 09-27-2014, 11:17 AM   #111
JoeTe
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And no one has a 330ci modified file (.bin)?

The .xdf file is great, but many do not know modify... lol
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Old 09-27-2014, 11:23 AM   #112
HakenTT
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Quote:
Originally Posted by JoeTe View Post
And no one has a 330ci modified file (.bin)?

The .xdf file is great, but many do not know modify... lol
dejalo asi como es,
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