NefMoto

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  :)

I would not say that maps calculate engine speed limit.
It should just be a constant (or maybe many constants) - just like it is in older (non-DBW) Motronic load based ECUs.

it is several constants.

Most of the time the Revlimiter is after near the MAF gamut.

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

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?

Is this the FIMWU (16x1 Faktor Impuls weich / Factor pulse soft) map? In the 3.82 map all the values are 1.0000

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)

Vehicle speed is directly a function of VSS with some error correction/adaptation. It should be a direct calculation. I found the following functions that could be involved:

DVFZ: A  5.  0  Diagnose: Plausibilitätsprüfung Fahrzeuggeschwindigkeit   VEHICLE SPEED DIAGNOSIS
CDTVFZ   Codeword tester : vehicle speed
FLCVFZ   Debounce Error: vehicle speed
HLCVFZ   Debouncing Healing: vehicle speed
LDVFZ   Error - > Lamp : vehicle speed
NDV   Error detection Tacho signal / speed threshold minimal
NDVO   Error detection Fz - speed signal , upper speed limit
TDV   Error detection Tacho signal / time for query
TMDV   Motor temperature threshold for release Fz - speed diagnosis
TSFVFZ   Error sum time: vehicle speed
VDMN   Speed ​​threshold ; fault detection speed signal

GGVFZG: A  8. 20  Gebergröße Fahrzeuggeschwindigkeit   VEHICLE SPEED FUNCTION
AIMV.0   Number of speed pulses per km for normalization v signal
AIMV.1   Number of speed pulses per km for normalization v signal
DVFZBEG.0   Delta speed limit change
DVFZBEG.1   Delta speed limit change
VFZMN.0   Detect Drive - standing
VFZMN.1   Detect Drive - standing
VFZSEG   Segment length for speed detection
ZFV.0   Time constant for filtering the velocity signal
ZFV.1   Time constant for filtering the velocity signal

Thanks for the info  ;D

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.

There's a 557t 3.82 limited map pack with a map desc of "Drehzahlbegrenzung" that looks like it's the rev limiter. 30x1 map all 6800 (AA).

The 557B 3.82 and 557P 5.92 doesn't have any map that has a 30x1 (even 5x1) with values of 6480 (A2) or 6800 (AA)

Looks like your right  ;D. 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.  ;D

It is exactly where you said it would be, same area for m5.92 557P and m3.82 557T. Didn't find it at first, because I was using the m3.82 557B file (rev-limit isn't after the MAF gamut for 557B, it's located at 7DF0 after Zündwinkelfrühverstellung (AR) bei dnar>0 und tl>TLARUN)

Rev-limiter now gone (well up to 10200)  ;D

Rev - Limiter Address (D02 557P file) 07AC2 - 30x1 map

Thanks for the help guys.  ;D

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.

Those are for the Rev-limit if there is a Vehicle Speed Sensor Fault. Vss has to be unplugged or faulty to make that work. The 30x1 map, seems to be several rev-limiters.

Hopefully one of them is rev-limit when stationary. (IE. LAUNCH CONTROL  ;D )

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?

The rev limiter for your file isn't after the Maf linearization. Could you post your file? Gona take a look at it later.

Iirc your using a 06A906018CG file. The info below is for a 06A906018CG (D020261206518103735212757/ /M3.83/03/400303/DAMOS3P1/3P10103-S/3P10103)

The values are a bit different compared to a 557P 5.9.2 and 557T 3.82. It's also not after the Maf gamut like the 3.82 557B.

**** use with CAUTION I haven't tried this cause I don't have a CG/3.83 ecu ****
This works on a 557P DO2 file. It should also work on a CG assuming map address/size is correct.

The CG rev-limit looks like it's in 7394 to 73B1 (30x1 map, 40 factor)

Search for this 8A A3 A3 A4 AA AA C8 C8 C8 C8 C8 C8 8C A5 A6 A6 AA AA A7 A8 A8 A8 AA AA 8A A3 A3 A4 A8 AA

I haven't tested but I take a look and I am not convinced about it. Take a look of the 2D or excel sheet I attach here. Looks something weird. In your case with 557P D02 file, have you tested it? which value(s) of the map have you changed? RPM effectively have changed to the requested value?

Works fine on a 557p d02, all values set to 10200. Tested to 8krpm, but using a piggyback for fuel/ignition/etc.

557p values
"AA A3 A3 A4 AA AA C8 C8 C8 C8 C8 C8 AA A5 A6 A6 AA AA AA AA AA AA AA AA AA A3 A3 A4 AA AA"

I tried it first at a lower rpm (2500) to confirm it works. Then upped it 10200 monitoring afr/knock/ignition, gradually upping boost and rpm.

Disclaimer: stock fuel/ignition/etc maps are only up to 6500-6800rpm. You need to tune them before upping rev limit. It'l still rev, but fuel/ignition/etc will be messed up. Also need valvesprings/valves/etc.

Have you tested your new rpm limit without piggyback ECU?

Nope. Wouldn't be possible without a full re-tune. Maf delete (but ecu still thinks there's a Maf and fuels accordingly) and 870cc injectors. Even without the piggyback it should still work. Piggyback just alters what it gets from the  ecu. If ecu cuts fuel engine goes lean. If ecu cuts ignition engine misfires. When I removed the rev-limit i didn't even have to re-tune, ecu did not change fuel or ignition.

Ecu fuel/ignition signal > piggyback alters signal > engine

The only difference, in your case, is that you would have to alter the fuel and ignition maps that are past the current rev-limit.

Winols has a partially defined map pack for a 3.82 that has a rev-limit map. The 30x1 map had a single value. Iirc it was a stage 1 map, it should give you an idea which maps you need to alter.

Hi ricekikr, I think that I found the explanation for the different rpm limiters we saw in the previous damos file you mention. I was digging in a 4B0907557B damos file that is available around there and I think that I found the complete BBNMAX Drehzahlbegrenzung function for  a M382 4B0907557B ECU. Then should be a similar function for M383 and M592. Take a look, what do you think???

/EPR,[EAMPRO.M3.82.05.400700],,DAMPAR_03
/EAD,$FFFF
/EPK,{53/1/M3.82/05/400700/DAMOS30N/30N01/30N010101/110497/}
PGM-Stand vom: 11-APR-1997 10:27
/PNR,{400700}
/KNR,{05}
/PRO,{R4 5VT 1.8l,04,0,0/5,2,07/97}
/YNR,{4B0 907 557 B}
/BEA,{Brecht}
/DST,{30N010101},{11-APR-97},{11.04.97/Bt/30M010101/Basisstand}
/TEL,{20754}

/FKT,%BBNMAX,{A 16. 20  Drehzahlbegrenzung}
18,DNMAXP,DNMXHP,DZUENMP,FNMAXP,NMAXDP,NMAXDV,NMAXHP,NMAXWHP,NMAXWP,NMAXZP,NMXP,RED1NMX,RED2NMX,RED3NMX,RED4NMX
TNMAXDV,TVMAXHP,ZWVNMAXP
7,B_NMAX,B_NMAXD,B_NMAXW,FESNMAX,NMXWH,REDMXN,ZWVNM;

338,/SPZ,DNMAXP,{Drehzahlhysterese für Drehzahlbegrenzung},13
$7E0E,$7E0E
/SPW,104,1,  0., 9960.
/SPX,0,0,  0.,  0.,0
/SPY,0,0,  0.,  0.,0
/FKX,6,0,0
/FKY,0,0,0
/ABL,0;

340,/SPZ,DNMXHP,{Hysterese für Drehzahlgrenzen},13
$7E32,$7E32
/SPW,104,1,  0., 9960.
/SPX,0,0,  0.,  0.,0
/SPY,0,0,  0.,  0.,0
/FKX,6,0,0
/FKY,0,0,0
/ABL,0;

480,/SPZ,DZUENMP,{Delta ZW für weiche nmax-Begrenzung},13
$7E20,$7E20
/SPW,15,1,  0., 255.
/SPX,0,0,  0.,  0.,0
/SPY,0,0,  0.,  0.,0
/FKX,6,0,0
/FKY,0,0,0
/ABL,0;

613,/SPZ,FNMAXP,{Abmagerungsfaktor bei weicher n/v-Begrenzung},13
$7E2C,$7E2C
/SPW,46,1,  0., 1.992188
/SPX,0,0,  0.,  0.,0
/SPY,0,0,  0.,  0.,0
/FKX,6,0,0
/FKY,0,0,0
/ABL,0;

1206,/SPZ,NMAXDP,{Dauerdrehzahlgrenze},13
$7E02,$7E02
/SPW,104,1,  0., 9960.
/SPX,0,0,  0.,  0.,0
/SPY,0,0,  0.,  0.,0
/FKX,6,0,0
/FKY,0,0,0
/ABL,0;

1207,/SPZ,NMAXDV,{Drehzahlbegrenzung bei Fehlererkennung Geschwindigkeitssignal},1
$743A,$743A
/SPW,104,1,  0., 9960.
/SPX,0,0,  0.,  0.,0
/SPY,0,0,  0.,  0.,0
/FKX,0,0,0
/FKY,0,0,0
/ABL,0;

1209,/SPZ,NMAXHP,{maximale Drehzahl für hartes Abschalten},13
$7E08,$7E08
/SPW,104,1,  0., 9960.
/SPX,0,0,  0.,  0.,0
/SPY,0,0,  0.,  0.,0
/FKX,6,0,0
/FKY,0,0,0
/ABL,0;

1210,/SPZ,NMAXWHP,{Umschaltschelle Drehzahlberenzung hart -> weich},13
$7E38,$7E38
/SPW,104,1,  0., 9960.
/SPX,0,0,  0.,  0.,0
/SPY,0,0,  0.,  0.,0
/FKX,6,0,0
/FKY,0,0,0
/ABL,0;

1211,/SPZ,NMAXWP,{weiche Drehzahlgrenze},13
$7DF6,$7DF6
/SPW,104,1,  0., 9960.
/SPX,0,0,  0.,  0.,0
/SPY,0,0,  0.,  0.,0
/FKX,6,0,0
/FKY,0,0,0
/ABL,0;

1212,/SPZ,NMAXZP,{Drehzahlgrenze für Zylinderabschaltung},13
$7DFC,$7DFC
/SPW,104,1,  0., 9960.
/SPX,0,0,  0.,  0.,0
/SPY,0,0,  0.,  0.,0
/FKX,6,0,0
/FKY,0,0,0
/ABL,0;

1214,/SPZ,NMXP,{Drehzahlbegrenzung},13
$7DF0,$7DF0
/SPW,104,1,  0., 9960.
/SPX,0,0,  0.,  0.,0
/SPY,0,0,  0.,  0.,0
/FKX,6,0,0
/FKY,0,0,0
/ABL,0;

1295,/SPZ,RED1NMX,{Reduzierstufe bei Bedingung 1 der NMAX-Begrenzung},1
$743E,$743E
/SPW,126,1,  0., 8.
/SPX,0,0,  0.,  0.,0
/SPY,0,0,  0.,  0.,0
/FKX,0,0,0
/FKY,0,0,0
/ABL,0;

1296,/SPZ,RED2NMX,{Reduzierstufe bei Bedingung 2 der NMAX-Begrenzung},1
$743F,$743F
/SPW,126,1,  0., 8.
/SPX,0,0,  0.,  0.,0
/SPY,0,0,  0.,  0.,0
/FKX,0,0,0
/FKY,0,0,0
/ABL,0;

1297,/SPZ,RED3NMX,{Reduzierstufe bei Bedingung 3 der NMAX-Begrenzung},1
$7440,$7440
/SPW,126,1,  0., 8.
/SPX,0,0,  0.,  0.,0
/SPY,0,0,  0.,  0.,0
/FKX,0,0,0
/FKY,0,0,0
/ABL,0;

1298,/SPZ,RED4NMX,{Reduzierstufe bei Bedingung 4 der NMAX-Begrenzung},1
$7441,$7441
/SPW,126,1,  0., 8.
/SPX,0,0,  0.,  0.,0
/SPY,0,0,  0.,  0.,0
/FKX,0,0,0
/FKY,0,0,0
/ABL,0;

1555,/SPZ,TNMAXDV
{Verzögerungszeit für Drehzahlbegrenzung bei Ausfall des Geschwindigkeitssignals},1
$743C,$743C
/SPW,161,2,  0., 655.35
/SPX,0,0,  0.,  0.,0
/SPY,0,0,  0.,  0.,0
/FKX,0,0,0
/FKY,0,0,0
/ABL,0;

1692,/SPZ,TVMAXHP,{Zeitschwelle für Übergang in harte n/v-Begrenzung},13
$7E14,$7E14
/SPW,169,2,  0., 1310.7
/SPX,0,0,  0.,  0.,0
/SPY,0,0,  0.,  0.,0
/FKX,6,0,0
/FKY,0,0,0
/ABL,0;

1924,/SPZ,ZWVNMAXP,{Max. Zündwinkelverstellung für weiche n/v-Begrenzung},13
$7E26,$7E26
/SPW,215,1,-90.,  0.
/SPX,0,0,  0.,  0.,0
/SPY,0,0,  0.,  0.,0
/FKX,6,0,0
/FKY,0,0,0
/ABL,0;

/UMP,%UR_BBNMAX,B_NMAX,{ Flag NMAX-Begrenzung aktiv */},$CD74,1,13,B_TRUE,3,$0004,K;
/UMP,%UR_BIT,B_NMAXD,{Nmax ueberschritten},$0098,1,13,B_TRUE,2,$0002,K;
/UMP,%UR_BBNMAX,B_NMAXW,{ Flag weiche Drehzahlbegrenzun},$CD74,1,13,B_TRUE,3,$0001,K;
/UMP,%UR_BBNMAX,B_NMAXWH,{ Flag weich/harte Drehzahlbegr},$CD74,1,13,B_TRUE,3,$0002,K;
/UMP,%UR_BBNMAX,FESNMAX,{ Faktor Einspritzkorrektur bei Drehzahlb},$CD6F,1,46,FKT128,3,$00FF,K;
/UMP,%UR_BBNMAX,NMXWH,{ variable weich/harte nmax-Grenze */},$CD73,1,104,NQ40,3,$00FF,K;
/UMP,%UR_BBNMAX,REDMXN,{ Reduzierstufe aus BBNMAX */   },$CD72,1,126,RSQ,3,$00FF,K;
/UMP,%UR_BBVMAX,REDMXV,{ Reduzierstufe aus BBNMAX},$CD76,1,126,RSQ,3,$00FF,K;
/UMP,%UR_BBNMAX,ZWVNM,{ Zündwinkelkorrekturwert */},$CD70,1,215,ZWNEG,3,$00FF,K;
/UMP,%UR_BBNMAX,AZUE,{ Zündungszähler */},$CD6E,1,15,DEZ,3,$00FF,K;
/UMP,%UR_BBNMAX,XNFLAG,{ Flags für NMAX-Begrenzung */ },$CD74,1,62,FLAG,3,$00FF,K;
/UMP,%UR_BBNMAX,XNFLAG,{ Flags für NMAX-Begrenzung */ },$CD74,1,62,FLAG,3,$00FF,K;
/UMP,%UR_BBNMAX,XNFLAG2,{ Flags für NMAX-Begrenzung */ },$CD75,1,62,FLAG,3,$00FF,K;
/UMP,%UR_BBNMAX,F_NMAXD,{ Flag n >= NMAXDP */},$CD74,1,13,B_TRUE,3,$0020,K;
/UMP,%UR_BIT,F_NMAXF,{ =1 => max. Drehzahl wurde ueberschritten},$008C,1,13,B_TRUE,2,$0020,K;
/UMP,%UR_BBNMAX,F_NMAXH,{ Flag n >= NMAXH für TVMAXH */},$CD74,1,13,B_TRUE,3,$0008,K;
/UMP,%UR_BBNMAX,F_NMAXW,{ Flag weiche Drehzahlbegrenzu},$CD75,1,13,B_TRUE,3,$0001,K;
/UMP,%UR_BBNMAX,F_NMXWH,{ Flag n >= nmxwh */},$CD74,1,13,B_TRUE,3,$0080,K;
/UMP,%UR_BBNMAX,T_TNMAXDV,{ Timer für TNMAXDV läuft */},$CD74,1,13,B_TRUE,3,$0040,K;
/UMP,%UR_BBNMAX,T_TVMAXH,{ Timer für TVMAXH läuft */},$CD74,1,13,B_TRUE,3,$0010,K;

I haven't tried all that you posted, just a few. Possibly those just point to the 30x1 Rev-limit map constant. The fully defined 3.82 file, on here, doesn't have the map for the 30x1 REV-limiter. Not all the 3.82/3.83/5.92 have it after the Maf Gamut, the values on it are similar.

I wonder why a lot on here say that the Rev-limit is calculated rather than a constant. Also had my doubts when I saw the 30x1 map. Then Kompressed (known tuner on here) mentioned that it had multiple constants. Confirmed this using the EVC/winols map pack.

Hopefully there's a rev-limit for when the vehicle is standstill = launch control. And hopefully it uses ignition cut rather than fuel cut to limit (i think the speed limiter uses ignition cut over fuel cut, same AFR no acceleration) = Full Boost Launch Control if ignition cut.

Did you check the limited map-pack from EVC/Winols for a 1.8t? It has the map location for the rev-limit map.

Ricekikr yes I saw the limited map-pack, I think it is for a 557T M382 file and also have the 30x1 rev limiter map of constants. I have revised the 557B M382 documented Damos and try to look and compare it with other ECU version M383 & M592. My first impression is that for M382, M383 and/or M592 location of constants are not the same, but in general seems to me that have the same operation way. Also some ignition cut, I think, is used for RPM limit operation.

Please take a look to the excel file attached also take a look at constants in my previous post. There could be the logic used for RPM limit operation.

i dont believe this is a 30x1 map. i think its more in the 6x5 area and im on a quest for the proper axis as there must be an axis.
i thought it was gear 0, 1, 2, 3, 4, 5 but that doesnt seem to be the case.