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sn00k
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« on: September 08, 2012, 10:15:29 AM »
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So.. im working with an 032HN ecu, ME7.5. I setup my fueling based on this method discussed here in the forums, and i was very happy with it.. atm i was running about 3CF of pulled timing and everything worked 110%.. fueling was SPOT ON without delays. NOW, i modified the tune for E85, and everything seemd happy, but, when i was done with the timing, and the CFs dropped to 0 (zero, as imo them should be using this fuel), the KFLAMKR/KFLAMKRL maps deactivated completely and my fueling solution was totally scrapped.. why?  i was under the impression setting the first column to 0 would make it allways active and use this map as a baseline, but from what i can find in my recent logs this is NOT the case.. or i am completely missing something here. i think prj mentioned something earlier here: It is my understanding, that due to the way maps are looked up, it will always read the first row anyway, when the retard is -2.25 or less. and yeah, that statement seems 100% correct. so.. is there a way around this? ..or will i need to setup my fueling baseline using another method.. perhaps it possible to use the KFLF map as a baseline? can it be used for this? any input would be appreciated =) |
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phila_dot
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« Reply #1 on: September 08, 2012, 10:21:02 AM »
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prj was saying that the axis didn't even need to be modified because the first row would get used when retard is from 0-2.25* which is the opposite from what you are saying.
What variables are you logging?
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sn00k
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« Reply #2 on: September 08, 2012, 10:41:34 AM »
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well.. im thinking the map are not even looked up unless knock occurs.. hence the first column could be 0-3 it wouldnt matter.. oooor im missing something here.
i was logging AFR using vag-com at the time.. "requested" and "actual", load%, CFs and rpms, and also using a standalone WBo2.. same results.
it is setup to ~12afr at a wot-pull, but once the CFs drop to 0, i loose the fueling and end up at 13.2 somewhere all the way to redline, which basically suggests it runs on LAMFA enrichment alone. (ive deactivated the BTS for troubleshooting purposes).
thing is, adding 2 degrees of timing and causing 2 CF on purpose cures it and then it follows the baseline around 12ish as it should.
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Bische
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« Reply #3 on: September 08, 2012, 10:51:48 AM »
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I also experienced this exact symptom when I attempted to run KR fueling, without any CF's my lamfawkr = 1. I went back to BTS fueling as I was running Maestro and didnt have access to anything to further investigate why this happend.
There is however 2 KFLAMKRL maps in my binary in difference from the 2.7tt binarys.
518M ME7.5
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phila_dot
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« Reply #4 on: September 08, 2012, 11:33:54 AM »
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What do you have for CWLAMFAW and how is KFLAMKR setup?
Why not use ME7L and log variables from this function?
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sn00k
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« Reply #5 on: September 08, 2012, 12:07:50 PM »
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i would love that, but atm my instrument cluster blocks the k-line so i cannot use the ME7L, i will run a separate k-line directly to the ECU later on and do some more in-depth logging.. just trying to get it running smoothly atm  just as Bische wrote above, seems it ignores the maps unless CFs are >0.. ugh.. major setback if this is the case.. CWLAMFAW sais "0", did i miss something here..?? KFLAMKR is setup as in attached picture. |
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« Last Edit: September 08, 2012, 12:17:28 PM by sn00k »
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Snow Trooper
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« Reply #6 on: September 08, 2012, 12:41:00 PM »
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Not my experience on 7.1, can you post your bin? I have run low boost race fuel and e85 and everything worked off the 0 row like normal. Possibly a wideband thing? What is requested AFR doing?
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cartoons?
6A 61 72 65 64 40 76 6C 6D 73 70 65 63
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sn00k
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« Reply #7 on: September 08, 2012, 01:02:12 PM »
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Not my experience on 7.1, can you post your bin? I have run low boost race fuel and e85 and everything worked off the 0 row like normal. Possibly a wideband thing? What is requested AFR doing?
requested AFR is requesting only 0.93 something.. while it should stay close to 0.8.. and as soon as a CF is present it follows the KR path again.. annoying. actual follows requested, very accurately.. i just wish requested would follow the "-0.0" row in KR. attached bin is the base bin im using, before i started messing with it. KR-related tables in post above.. and yeah, its a wideband ecu. is my setup of the tables wrong? the KFLAMKRL is the multiplication factor for KFLAMKR, right? (im thinking i perhaps swapped the maps in my head.. and that KFLAMKRL should be the AFR, and the KFLAMKR the factor.. not that this should matter, but perhaps it does..?) |
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« Last Edit: September 08, 2012, 01:15:00 PM by sn00k »
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phila_dot
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« Reply #8 on: September 08, 2012, 02:44:57 PM »
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KFLAMKR is the factor for KFLAMKRL.
KFLAMKR (load, rpm)
KFLAMKRL (~KR, Load)
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sn00k
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« Reply #9 on: September 08, 2012, 03:48:45 PM »
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KFLAMKR is the factor for KFLAMKRL.
KFLAMKR (load, rpm)
KFLAMKRL (~KR, Load)
shouldnt KFLAMKRL be KW, Load with KR in the cells, and KFLAMKR be load, rpm, with KR-factor in the cells? so, wishing to have 12.0 afr, i could set up KFLAMKRL in column 0.0 to 14.7.. and then KFLAMKR to be 0.8163.. am i understanding things correctly? this "load", can it be over 100%? else i could see where things fail.. as i start my maps at 95%.. the original map is never over 100% in these ecus.. axis should be located at 0x18288 in the bin, 8 bit, with X * 0.75 as conversion.. is this even correct? |
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« Last Edit: September 08, 2012, 03:50:38 PM by sn00k »
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phila_dot
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« Reply #10 on: September 08, 2012, 08:51:42 PM »
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shouldnt KFLAMKRL be KW, Load with KR in the cells,
and KFLAMKR be load, rpm, with KR-factor in the cells?
KFLAMKRL (load, ignition angle offset for knock and temp) - lambda KFLAMKR (rpm, load) - weighting factor for KFLAMKRL so, wishing to have 12.0 afr, i could set up KFLAMKRL in column 0.0 to 14.7.. and then KFLAMKR to be 0.8163.. am i understanding things correctly?
Not sure what factor your are using, but KFLAMKRL is naturally lambda with a factor of 0.007813. If you prefer AFR you can view it that way with the proper factor (*14.7). I just put target lambda/AFR in KFLAMKRL and use KFLAMKR to enable/disable the function basically (0 = off, 1 = on). I already use LAMFAW for slight enrichment prior to LAMKR and the interpolation between axis values provides a nice transition. this "load", can it be over 100%? else i could see where things fail.. as i start my maps at 95%.. the original map is never over 100% in these ecus.. axis should be located at 0x18288 in the bin, 8 bit, with X * 0.75 as conversion.. is this even correct?
Yes, it is engine load (rl). Never over 100? That can't be right. I'm not sure the location in your file, but both maps share the axis, it is 8 bit, and 8 bit load factor is 0.75. |
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sn00k
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« Reply #11 on: September 09, 2012, 12:08:43 AM »
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I just put target lambda/AFR in KFLAMKRL and use KFLAMKR to enable/disable the function basically (0 = off, 1 = on). hmm.. this.. can KR only be used to enable/disable? 1/0.. or can it be used as in my example above to scale the KRL output, 0.95 for example..? the axis seems right.. rl.. and all conversion factors are right. the original axis reads: 20, 40, 60, 70, 80, 90, which is why i was curious.. thanks for all your input on this, its greatly appreciated |
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phila_dot
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« Reply #12 on: September 09, 2012, 05:39:50 AM »
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hmm.. this.. can KR only be used to enable/disable? 1/0.. or can it be used as in my example above to scale the KRL output, 0.95 for example..?
KFLAMKR is used to scale KFLAMKRL, it basically provides a percentage. the axis seems right.. rl.. and all conversion factors are right.
the original axis reads: 20, 40, 60, 70, 80, 90, which is why i was curious..
That doesn't look right compared to the M box axis, but it could be. M box increments by 20 and maxes out at 140 iirc. |
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sn00k
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« Reply #13 on: September 09, 2012, 07:50:16 AM »
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KFLAMKR is used to scale KFLAMKRL, it basically provides a percentage. that was my understanding also. That doesn't look right compared to the M box axis, but it could be. M box increments by 20 and maxes out at 140 iirc. regarding the "rl" axis, the definition i based this upon could be wrong, ive noticed a few minor errors earlier, but it seems close to 100% accurate. map KFLAMKRL: located at 19051, 8 bit, 6x6, conversion: x * 0,007813 Y-axis: 1908A, 8 bit, units: KW, conversion: x * (-0.75) X-axis: 18288, 8 bit, units: % rl, conversion: x * 0.75 maby there IS a difference in how this map is looked up between the 7.1 and the wideband 7.5? perhaps it could be "reverted"/altered in the code.. im very novice to code patching and c167 asm, but i would love to use this fueling method as it has no delays and the accuracy is spot on. |
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matchew
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« Reply #14 on: September 09, 2012, 08:11:53 AM »
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032HN and 551F appear to have the same routines that call these tables.
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