03-30-2015, 02:14 PM | #45 | |
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03-31-2015, 04:30 PM | #46 | |
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F82 M4 Original Settings: C_Laenderkennung => US CTpmsMarket => US CPrewarnEnable => disable CPrewarnIgnition => disable CalLrPDevMax => 100kpa CPInitRangeMax => 200kpa UiaSetLevelPc => 25% UiwSetLevelPc => 20% C_Werksnummer => Werte = 01, 10 (Calculated value) C_Codierdatum => Werte = 14, 08, 08 (Calculated value) And another Canadian F82 I did afterwards. Notice the difference in the calculated values, even with the same car (both F82, but different options) F82 M4 Original Settings: C_Laenderkennung => US CTpmsMarket => US CPrewarnEnable => disable CPrewarnIgnition => disable CalLrPDevMax => 100kpa CPInitRangeMax => 200kpa UiaSetLevelPc => 25% UiwSetLevelPc => 20% C_Werksnummer => Werte = 01, 10 (Calculated value) C_Codierdatum => Werte = 14, 09, 22 (Calculated value) I just assumed that since these were "Calculated" values, that they would differ. I thought it might have to do with driving style? |
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04-20-2015, 11:11 AM | #48 |
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There is a big thread going on about this on the General Forum, http://f80.bimmerpost.com/forums/sho....php?t=1045504 I am thinking about it but getting into chassis control is pretty serious business unless you really know what you are changing. It has been a while since this thread started and I have not seen anyone breakdown what the values actually mean, does anyone know now? I don't want to mess with Euro MDM unless I have all the facts.
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04-30-2015, 02:07 PM | #49 |
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I just pinged BPMSport. Let's see if they can help with Euro MDM coding. I really need to see if someone can do this for me before selecting wheels/tires.
Apparently if you run a square setup (or any setup that the front and rear have the same rolling diameter), our MDM goes crazy. The stock rear is 2.6% larger than the front. Running square setup makes the computer thinks the back wheels are slipping, as they would has the same rotation as the front.
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04-30-2015, 03:30 PM | #50 | |
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I coded Euro MDM. It is much less intrusive and much more enjoyable for street use, but I still find it gets in the way at the track.
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04-30-2015, 03:35 PM | #51 | |
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Previous cars: M4cs 2019 F82 Limerock Grey / M4 2015 F82 Silverstone / M3 2008 E92 Silverstone / M3 2002 E46 Carbon Black Last edited by CanAutM3; 05-01-2015 at 08:53 AM.. |
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05-01-2015, 08:09 AM | #52 |
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05-01-2015, 08:52 AM | #53 | |
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But don't take my word for it, I am a total newbe and layman regarding coding . Maybe experts can chime in.
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05-02-2015, 04:43 AM | #54 |
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05-02-2015, 08:33 AM | #55 | |
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Codier = Coding Datum = Date I left the values as is and the Euro MDM is working on both cars even with different values. |
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05-02-2015, 09:05 AM | #56 |
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05-02-2015, 09:23 AM | #57 |
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My Austrian descent kinda gave me a little advantage with the translation
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05-05-2015, 03:08 AM | #58 |
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Hey guys, for members who posted values for the C_Werksnummer and
C_Codierdatum could you please let us know your tire size and tread depth of mileage driven? One GUESS that I have for why there is a difference is that the factory 18s and 19s have a different relative diameter (i.e. on the 18s the rear tire is +2.7% larger diameter but on the 19s the diameter difference is +2.3%) As a forum we've posted elsewhere that the electronics are activated by differences in rotational speed so my GUESS is that these are calibration values to let the computer know what size of tire is equipped and MAYBE a calculation factor for the wear. The reason I am curious is that I would like to use a either a square 275/40/18 setup or staggered 275/35/18 front and 295/35/18 rear (if I can get over the added wheel gap....) and if we could figure out if these are really calibration values when perhaps we can fine tune the euro MDM based on the non OEM tire sizes we are using |
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05-06-2015, 04:25 PM | #59 | |
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I checked the PSS diameters on the Michelin website and they are 661mm/677mm for the 18" and 661mm/675mm for the 19". So the rolling radius of the rear 18" is only 1mm larger than the rear 19". That is negligible IMO and well within tire wear variation (thread depth is 7mm). Therefore, I don't believe there is a DSC/MDM calibration difference between the 18" and 19" wheels.
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05-07-2015, 12:48 AM | #60 | |
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05-10-2015, 11:26 AM | #61 | |
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05-10-2015, 12:03 PM | #62 |
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How does it feel?
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05-10-2015, 12:25 PM | #63 |
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Haven't drove it yet, it's pouring out. Will write something up once I have a feel of it. I went code crazy all morning.
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05-11-2015, 10:47 AM | #64 |
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Euro MDM hands down make the car so much more enjoyable to drive. It allows more wheels slip, tire chirp, before it intervenes. I took the car out to an off beaten path, the tail kicks out like crazy on 2nd/3rd gear. You can't drive with one hand with Euro MDM, that's for sure.
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05-16-2015, 10:27 AM | #66 |
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Does it makes sense to wait until after the 1200 mile service to code it to Euro spec? I don't want them coding it back or reflashing it (not sure how the coding works yet) while in for the 1200 mile service
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