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BlackT
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« on: September 20, 2020, 02:22:25 AM »
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Why is this happening? After shifting plate is not following pedal, plate have about 200 mS delay.
Mehanical problem or something in M-box file?
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nyet
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« Reply #1 on: September 20, 2020, 12:24:38 PM »
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There are a bunch of delays stacking there
1) ME7 slow torque path (most of it)
2) throttle plate actuator/servo control (probably a few ms)
3) throttle plate angle sensor sampling (should be less than 10 ms, unless the ADC doesn't work like i think it should, would have to look it up)
200ms seems high but it might be normal.
would need to dig around old logs to make sure
this is partly why ppl hate dbw
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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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BlackT
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« Reply #2 on: September 20, 2020, 01:03:57 PM »
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On D-box(different car) I see about 100ms, 1.8T under 100 ms
But still on track 100ms is too much, soo that only solution is NLS
Do you have( or somebody else) function for disable KR on M-box during NLS?
I am really really short with time so I need help desperate
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« Last Edit: September 24, 2020, 01:06:43 AM by BlackT »
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nyet
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« Reply #3 on: September 20, 2020, 01:08:47 PM »
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On D-box(different car) I see about 100ms, 1.8T under 100 ms
But still on track 100ms is too much, soo that only solution is NLS
Do you have( or somebody else) function for disable KR on M-box during NLS?
I am really really short with time so I need help desperate
Understood  Sorry, no, i still don't have an NLS function i trust, and i haven't had time to make my own. |
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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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BlackT
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« Reply #4 on: September 20, 2020, 01:13:17 PM »
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Could this metod than work:
Raise all KR maps after 6500 RPM so that ECU can't see knock after that RPM, and than shift with NLS at 6600-6800.
It is little risky but it could work
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nyet
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« Reply #5 on: September 20, 2020, 03:31:50 PM »
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Could this metod than work:
Raise all KR maps after 6500 RPM so that ECU can't see knock after that RPM, and than shift with NLS at 6600-6800.
It is little risky but it could work
would work but seems like a really, really bad idea |
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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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Blazius
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« Reply #6 on: September 20, 2020, 05:44:36 PM »
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Do you have time to flash a different bin and test it with that ? 200ms seems a bit too high but it might just be hardware fault/age.
And that seems like a very bad idea. 2.7t is a strong engine but...........
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jdm
Newbie
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Posts: 8
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« Reply #7 on: September 20, 2020, 06:23:45 PM »
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Double check KFWDKSMX. Default mbox settings limit throttle angle below 4000rpm, and if unmodified you are likely dipping below that threshold during shift.
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nyet
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« Reply #8 on: September 20, 2020, 06:39:03 PM »
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Double check KFWDKSMX. Default mbox settings limit throttle angle below 4000rpm, and if unmodified you are likely dipping below that threshold during shift.
I dont see those logs showing that threshold, unless there is a time constant and or blending function that gets fed by WDKSMX Good call though, would be easy enough to modify the map to rule it out. |
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« Last Edit: September 21, 2020, 09:56:34 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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BlackT
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« Reply #9 on: September 21, 2020, 01:48:15 AM »
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Disabling KR after 6500 won't make diference, beacuse false knock is detected when RPM start to drop at about 5500-6000
Best I can do is to add a 5% to KFKEF
Set KFZW to something safe
And lower KRDWA so ignition will return quick to normal values after false knock
Will also put some ethanol im fuel to be more safe
And hope the best
Will try also flash a allroad M file( original from this engine) to see will that fix throttle response.
But still NLS is better option, even if that will reduce power i could get advantage
Or my old idea: make extrenal controler to cut power to injectors when conditions are made.
Edit ESKNOF so there will be no DTC...
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« Last Edit: September 21, 2020, 02:16:01 AM by BlackT »
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nyet
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« Reply #10 on: September 21, 2020, 09:57:29 AM »
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Also, if you go 100% E85 you can definitely detune KR  |
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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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