Tshirt2k
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« Reply #45 on: June 16, 2016, 02:39:55 AM »
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1) MAF calibration (MLHFM, KFKHFM)
2) Fueling system calibration (KFLF, FKKVS)
Now, if you are wanting to be exact, you can to do them one at a time, independently
for 1), typically, you'll have a MLHFM from the MAF manufacturer to start with. KFKHFM should be calibrated by comparing ps_w with actual boost (during WOT), and req load with actual load (in areas where you expect actual load to match req - e.g. req boost and actual boost are the same). You really can be arbitrarily far off with either (within reason) at the end of the day, though, as long as the discrepancy looks consistent (no really big swings
Hope that helps.
IMO this is some key info.  I'd like to do it this way using Kfkhm to get ps_w closer to actual seeing as I am in the ballpark with MLHFM. There is still a slight discrepancy. Once happy I will then go into fuel. I think I will use FKKVS and maybe use the FKKVs finder as it seems similar to the auto tune you get in tuner studio MS. Doing it manually would probably take forever. |
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nyet
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« Reply #46 on: June 16, 2016, 10:11:30 AM »
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I'd like to do it this way using Kfkhm to get ps_w closer to actual seeing as I am in the ballpark with MLHFM. There is still a slight discrepancy.
IMO not really big enough to worry about.. My reasoning: odds are that the intake is non-linenar, not your fuel system, so in most cases, you can often let the trims tell you what is wrong with your MAF calibration, and not with your fuel (at least part throttle), so that is an alternate method: 1) get KFKHFM close with ps_w (not exact) 2) use trims to fix up KFKHFM for part throttle (assuming your TVUB is correct and KRKTE is close) If you are finding you are shifting LARGE portions of KFKHFM around, you should probably scale KRKTE or mass scale MLHFM until the entire fuel curve ends up closer. |
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« Last Edit: June 16, 2016, 10:15:08 AM by nyet »
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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Tshirt2k
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« Reply #47 on: June 16, 2016, 10:45:18 AM »
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Not sure what you mean by "trims". I know you mean short and long term but how i can see them in some useful form in the logs.
Do you mean fr_w or % shown in vcds?
Edit: I've found variables to log
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« Last Edit: June 16, 2016, 11:07:14 AM by Tshirt2k »
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Tshirt2k
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« Reply #48 on: June 20, 2016, 12:24:51 PM »
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I seem to be going in the right direction with KFKHFM, fuel seems to be getting closer to target after many changes but I'm having an issue with throttle cut after 6k. I'm not able to get a clean run to the redline.
I have checked out IOP and IRL and it seems high enough as does HBN. Is there anything else i'm missing
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nyet
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« Reply #49 on: June 20, 2016, 12:37:07 PM »
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rlsol comes almost directly out of IRL... not sure why it is cutting.
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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Tshirt2k
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« Reply #50 on: June 20, 2016, 01:49:19 PM »
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Would it cut if the IRL comes out much higher than requested?
Maybe iop is requesting too much in that area.
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« Last Edit: June 20, 2016, 03:17:33 PM by Tshirt2k »
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nyet
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« Reply #51 on: June 20, 2016, 02:55:32 PM »
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Something is causing slow path intervention, and it doesn't look like it is IRL/IOP..
have to dig through the rl_sol path a bit more, maybe I'm missing something obvious.
Do you have ESP turned off during your pull?
Could be something obvious like ASR.
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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Tshirt2k
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« Reply #52 on: June 20, 2016, 03:11:36 PM »
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Car doesnt have ESP. Unless there something active in the map
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nyet
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« Reply #53 on: June 20, 2016, 05:58:54 PM »
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Going to have to log rlmax->IOP->mimax, and see if it is limiting mifa into KFMIRL. mrfa is properly pegged at 100, so mifa becomes the input into KFMIRL) Hope that makes sense. Rearead this section: http://s4wiki.com/wiki/Tuning#Requested_load_limitingYou may need more IRL for lower mifas... Still, it is spikey, so something else is interfering with rlsol, not sure what yet. |
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« Last Edit: June 20, 2016, 06:04:21 PM by nyet »
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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Tshirt2k
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« Reply #54 on: June 21, 2016, 01:53:51 AM »
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Ah.. I thought mifa was the output of IOP  Seems that's where the issue halts Mimax isn't a variable I have in my file. I'd try to disassemble if I knew how.  |
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nyet
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« Reply #55 on: June 21, 2016, 02:32:21 AM »
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see if you can log milsol and milsolv
also miasrl and B_asr to make sure it isn't traction control.
There are a bunch other slow path limiters in MDBGRG (that generate the mibgrl limit) but hopefully you won't have to trace those.
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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nyet
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« Reply #56 on: June 21, 2016, 02:53:52 AM »
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Also double check KFMLDMX and MLMAX. Looks like it is consistently triggering around 650kg/hr
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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Tshirt2k
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« Reply #57 on: June 21, 2016, 12:08:30 PM »
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Also double check KFMLDMX and MLMAX. Looks like it is consistently triggering around 650kg/hr
MLMAX is set at 680kg/hr KFMLDMX seems high enough against rpm. I haven't got those variables either. Does traction control still work even though there's nothing wired in, or wheel speed sensors?? Can it be disabled in the file to be sure? Edit: I have removed abs module in cw_can_r it is 00'd |
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« Last Edit: June 21, 2016, 12:21:02 PM by Tshirt2k »
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nyet
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« Reply #58 on: June 21, 2016, 12:12:09 PM »
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MLMAX is set at 680kg/hr
Look at your logs. Not high enough.. |
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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Tshirt2k
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« Reply #59 on: June 21, 2016, 12:36:21 PM »
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I have raised it to 800.
Will log again.
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« Last Edit: June 21, 2016, 12:49:34 PM by Tshirt2k »
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