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nubcake
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« Reply #45 on: April 21, 2017, 08:33:42 AM »
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Are you running MAFless by any chance?
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KasperH
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« Reply #46 on: April 21, 2017, 12:46:36 PM »
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So that made no difference changing the map axis back to stock on the flash, same rollercoaster trims  Are you running MAFless by any chance?
No, stock MAF  |
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nubcake
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« Reply #47 on: April 21, 2017, 03:14:27 PM »
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Is TVUB correct for these injectors?
Pressure-tested the intake?
I mean, something else is definitely going on if your STFTs are all over the place & idle is effed up.
EDIT: also, regarding your question about FKKVS axis - didn't check your specific binary, but usually FKKVS has its own axis. You can check yourself - if both axis precede the map itself, they're almost always exclusive to this specific map.
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« Last Edit: April 21, 2017, 03:21:04 PM by nubcake »
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KasperH
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« Reply #48 on: April 21, 2017, 03:44:07 PM »
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Is TVUB correct for these injectors?
Pressure-tested the intake?
I mean, something else is definitely going on if your STFTs are all over the place & idle is effed up.
EDIT: also, regarding your question about FKKVS axis - didn't check your specific binary, but usually FKKVS has its own axis. You can check yourself - if both axis precede the map itself, they're almost always exclusive to this specific map.
Pressure pipes tested to 2.5 bar I have thought of TVUB, but it should be right since its taken from a ecu file that would have been in the car, but could be I got it wrong? Injectors are Bosch 0 280 155 892 EV12 06A906031J 386cc(393cc stated by Bosch) The car is a European Audi TT 8N AMU 8N0906018K |
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« Last Edit: April 21, 2017, 03:55:37 PM by KasperH »
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nitromanstonV
Newbie
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« Reply #49 on: April 22, 2017, 09:30:13 AM »
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Too bad it does not work for med9  |
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KasperH
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« Reply #50 on: April 22, 2017, 02:16:45 PM »
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so since everything looks to be correct(except for FKKVS), i think that the only conclusion can be that the injectors are inconsistent aka junk time to go ID725 or Bosch EV14 SxT 630cc  |
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guitar24t
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« Reply #51 on: April 22, 2017, 03:39:22 PM »
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so since everything looks to be correct(except for FKKVS), i think that the only conclusion can be that the injectors are inconsistent aka junk time to go ID725 or Bosch EV14 SxT 630cc If FKKVS is not all 1s to start with stock, you should start with stock FKKVS. FKKVS is meant to correct for returnless fuel systems. If you have a returnless fuel system, and you set FKKVS all to 1s, it's going to be completely messed up. Starting with the stock calibrations should make things much better. |
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KasperH
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« Reply #52 on: April 22, 2017, 07:03:08 PM »
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If FKKVS is not all 1s to start with stock, you should start with stock FKKVS. FKKVS is meant to correct for returnless fuel systems. If you have a returnless fuel system, and you set FKKVS all to 1s, it's going to be completely messed up. Starting with the stock calibrations should make things much better.
Is FKKVS per car or per injectors? I tried with stock FKKVS from the Audi TT file and it was no good. Haven't tried with the stock FKKVS from my own car since I thought that wouldn't work well. So stared "fresh" thinking it would be best? |
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guitar24t
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« Reply #53 on: April 23, 2017, 09:00:19 AM »
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Is FKKVS per car or per injectors? I tried with stock FKKVS from the Audi TT file and it was no good. Haven't tried with the stock FKKVS from my own car since I thought that wouldn't work well. So stared "fresh" thinking it would be best? You should start with FKKVS from the car, if it is a returnless fuel system |
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KasperH
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« Reply #54 on: April 23, 2017, 11:53:32 AM »
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Stock return system, "same as the Audi I just tried copying the FKKVS from the Audi, axis and all. It's more reasonable, idle is good and LTFT is -3.9% but still hunting a bit but not as much Not ideal, but sort of acceptable for the time being. |
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KasperH
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« Reply #55 on: May 07, 2017, 04:13:56 PM »
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is there anything else that can interfere with the calibration? wall-wetting, overrun, knock enrichment? |
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rogerius
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« Reply #56 on: May 07, 2017, 10:41:35 PM »
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is there anything else that can interfere with the calibration? wall-wetting, overrun, knock enrichment? you have to disable the fuel trims to properly calibrate FKKVS, have you considered that? |
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Ken-1
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« Reply #57 on: May 08, 2017, 11:11:18 PM »
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Thank you very much for this tool, made a huge step change in driveability for my car. 1.8t with large MAF.
After 3 iterations it´s really good, will continue to use it, but cannot be much better than what it´s today.
Many thanks!
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KasperH
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« Reply #58 on: May 09, 2017, 02:16:40 AM »
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you have to disable the fuel trims to properly calibrate FKKVS, have you considered that?
I just can't seem to get this to work properly?
I'm logging tevfakge_w, nmot_w, and fr_w with NOLRA=7 and FKKVS all 1 on a 30 min drive(3 times now) and it generates a complete correction map.
But when I write the corrections to the car it's just all over the place with the fuel. STFT range from -25 to +25 in some cases, idle is a mess too. Although LTFT are -1.5 to -2.5 which is pretty decent. And when I log a WOT pull it's hunting hard and fr_w is getting a good workout...
Have I missed an important step? Or are my injector just complete garbage?
P.s. I'm dialing in some 386cc 210HP injectors.
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KasperH
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« Reply #59 on: May 09, 2017, 06:11:56 AM »
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So on the surface it seem pretty solid after 3 consecutive 30 min runs with a new FKKVS calculated from the previous. LTFT is 0% on normal driving, and with a heavy foot it's -0.8% But I still see it hunting a bit in some situations. Does the software take the whole log and average out the data points, Or just a set number of data points? |
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