Does anyone have a tuned AEB m5.92 file? Specifically one with a higher than 6800 rev limit, any stage tune.

Been trying to figure out which maps calculate rev limit.

Tia 

it is several constants.

I kept on reading it was calculated. Thanks for the correction. 

I'll check the maf curve.

Right now the revlimiter (or removal of) is using the nmax limiter with vss error.

Could anyone point me in the speed limiter direction?

I have checked some files and found some correlation, rev limiter control (NMAXDV/NMAXF) is located in the same address in the same family. Here the indicated variables and the others at each side of it.

M383s
06934 (FHAKHMX) <--->0693A (NMAXDV)<--->0693C(TNMAXDV)
069E8 (MEESG) <--->069EC (NMAXF)<--->069EE (WNWA)

M592s
07438 (TKHMX)<--->0743A (NMAXDV)<--->0743C(TNMAXDV)
074C4 (NDASR)<--->07C6(NMAXF)<--->074C8(WNWA)

Thanks for the info  

NMAXDV - I've been running it this way for a couple years now. Works ok, but needs the vss wire to ecu to be cut to get a vss error, to work. Want to get vss back to make other vss functions work (like moving idle)

NMAXF - Currently set to 7100rpm. I think this is just for the rpm exceeded code.

TNMAXDV - Haven't played with it, please correct me if I'm wrong, but I think is just the delay time before the NMAXDV limit works after it gets a vss error code.


AIMV - Been trying to find the map location for this in the M592.

VFZSEG - Not sure what this is for, speed limit per gear? Also couldn't find it in the m592.

Looks like your right  . I'll try it out. Thanks.

Both 5.92 (557P) and 3.82 (557T) has the rev-limiter after the MAF. The 3.82 (557B) seems to be different though.

The 557P and 557T have similar 00 00 00 00 00 00 00 00  after the 256x1 map of the MAF then what looks like a 30x1 map. On the 557B it's two 16x1 maps with values of 40.

It also looks like it's the speed limiter as well. It limits RPM to around 6500 at some parts of the map. This should equate to 130mph. 

I have not checked the 8D0907557T file but the others file I have checked I have find this info:
4B0907557B M382
NMAXF   1x1   $074C6   Fehlererkennung nmax - Überschreitung
NMAXDV   1x1   $0743A   Drehzahlbegrenzung bei Fehlererkennung Geschwindigkeitssignal
TNMAXDV   1x1   $0743C   Verzögerungszeit für Drehzahlbegrenzung bei Ausfall des Geschwindigkeitssignals

4B0907557P M592
NMAXF   1x1   $0705C   Fehlererkennung nmax - Überschreitung

06A906018R/CG/CJ M383
RED1NMX   1x1   $0693E   Reduzierstufe bei Bedingung 1 der NMAX-Begrenzung
RED2NMX   1x1   $0693F   Reduzierstufe bei Bedingung 2 der NMAX-Begrenzung
RED3NMX   1x1   $06940   Reduzierstufe bei Bedingung 3 der NMAX-Begrenzung
RED4NMX   1x1   $06941   Reduzierstufe bei Bedingung 4 der NMAX-Begrenzung
NMAXF   1x1   $069EC   Fehlererkennung nmax - Überschreitung
NMAXDV   1x1   $0693A   Drehzahlbegrenzung bei Fehlererkennung Geschwindigkeitssignal

I have checked several M383 ECUs and only few M592. Sorry about that. But all this map RPM limit values are not near MAF map (MLHFM), at least in file I have checked. But for sure there a big "00" area after it. Remember that although M38x/M592 are similar families, all have some differences in functions, maps locations other little changes.

ricekikr will be nice if you summarize your findings to document it.

Hi ricekikr I have been looking the info you found about RPM Limiter after MAF Linearization map (MLHFM) and comparing it with several M382 M383 & M592 maps that I have, and I only found that info in a 8D0907557T M382 map. I try to apply the same offet (40*Eeprom) to other and the values does not have the same structure. Here I send you a compilation of the data located after MLHFM (MAF Linearization Map) of several maps. What do you think mate?