Have BMW made a mistake!? I can’t quite believe it. I have double checked this from a fresh flash of the whole DME using the WinKFP BMW tools and a new installation of the stock binaries.

Here is the KFMIRL map:



Here is what it looks like when I have moved those 6 entries:



I doubt you would get to those map points on a drive which is why I haven't noticed it on the road! Presumably at very light throttles; high rpm; a lot of fuel would get dumped in?

Here is KFMIOP by the way; looks like I would expect:

Agreed. Looks like a sign issue.

How accurate is the definition?

I actually think the map is 13x20 instead of 16x16, you can verify the map size by looking at the byte before the axis. If we assume 760 is the first value of the rpm axis in 8bit, then the byte before is 0D, 0D x 40 =520

Why don't you post your file here?

Here is the full story!  It’s a long(ish) story! Car is a BMW 4.4i V8 fitted in a 5 series. The 4.6i V8 fitted to the X5 communicates oil temperature via the CAN bus. The wiring diagram is identical. Both use the same DME (ECU). The 4.6i runs the latest version of the DME firmware.
DME running old version of firmware. Data area OLD.Bin. Car ran like this for years!
I needed the latest version of firmware to get a CAN message for oil temperature transmitted. This only happens on the 4.6 litre version of the engine! However there is a 4.4 litre tune for this firmware with the CAN message disabled. That 4.4 litre tune is also for the X5.
No problem. Flash the latest version of the firmware and the data area for the 4.6 litre version and swap over the map areas from the 4.4 litre tune.
Problem: No CAN message.
Solution: Find the map/data which controls the CAN message and copy that from the 4.6 tune to the 4.4 tune.
Done. Works fine. Car drives fine. So I have the latest firmware; the 4.4i maps but tuned for the X5 and not the 5 series. Throttle response is different to the 5 series maps; presumably to compensate for the extra weight!
Problem: Curiosity got the better of me and I looked at the maps; there isn’t much difference between the 5 series and the X5 tune. All look very similar apart from KFMIRL which has that strange hump.
If anyone has time to have a look for me I would appreciate it.
Here is what I attach:
GF11286 7533623 NEW.xdf = This is the TunerPro file with locations from the new firmware.
GF11268 E39 OLD.xdf = This is the TunerPro file with locations from the old firmware.
E39 OLD.Bin = The original tune for the E39, old firmware.
X5 NEW.Bin = The tune for the X5, new firmware.
So my question: What is happening to KFMIRL in the NEW files? Is it correct or should I “correct it” to look like the OLD files?
At the moment I have “corrected” the map in NEW.Bin to look like the map from OLD.Bin.
Car runs and drives superbly. But have I messed up?

http://www.reeve.org.uk/NetMoto/E39_OLD.Bin
http://www.reeve.org.uk/NetMoto/X5_NEW.Bin
http://www.reeve.org.uk/NetMoto/E39_OLD.xdf
http://www.reeve.org.uk/NetMoto/X5_NEW.xdf

Thanks. Just looking though some maps. The IRL at least looks 16 x 16.

But as if things weren't confused enough :-).

0261204620 is the ECU number of my old ECU. I have flashed in the software and tune from a 0 261 207 106 Bosch number. The ECU in the car is still the 0261204620 hardware but I have forced in the firmware from a 0 261 207 106. To be honest I didn't think it would work but it is running fine! The hardware differences must be very minimal.

The reason I did this was it's only the latest firmware which contains the code to transmit oil temp via CAN.

What is very interesting is that hardware number (the 0261204620) isn't in the file I flashed so the BMW flash program (WinKFP) must add it automatically; along with the VIN number.

Maybe I should buy a 106 DME from eBay and run that but I don't believe it will help the strange map identification. If you have a 106 .ols file I would love that.**


** It would also shed some light on the Oil Temperature CAN bus message map I have found; at the moment it's just a few bytes which appear to allow the oil temperature to be transmitted via CAN. I can't find these bytes in any other firmware version.

I don't think it's possible to read the entire flash memory without desoldering the chip. I assume the Bosch number is stored in the part not readable. I'll see if I have 106!

Me, or him? I know very little about the OLS. I checked a few maps and they looked reasonable.