totti
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« on: August 11, 2019, 10:59:01 AM »
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Hi,
I've a little overboost problem. I tried to compensate it with KFLDIMX but the reaction is not as expected.
I've attached the starter KFLDIMX and the log for that(1st 2 picture)
After that I modified the KFLDIMX, subtract -3 at 3000rpm(3rd picture)
And I still have the overboost(not as much previously) and after 4500rpm it looks a shit.
What I can see from the log that fuel injector duty cycle is over 100%. Maybe my injectors are too small for that config?
Thanks for the help
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nyet
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« Reply #1 on: August 11, 2019, 01:01:52 PM »
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PIDs dont like huge cliffs in the set point.
Why on earth is your boost request dropping like a stone, then coming up again, then dropping again.
What do you THINK a PID is going to do in response?
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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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totti
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« Reply #2 on: August 11, 2019, 01:10:18 PM »
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PIDs dont like huge cliffs in the set point.
Why on earth is your boost request dropping like a stone, then coming up again, then dropping again.
What do you THINK a PID is going to do in response?
These set points created by the controller. I don't understand why it happened. The requested boost should be the same as it is on the first log. I always make the log from 1800rpm until 6500rpm WOT. |
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nyet
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« Reply #3 on: August 11, 2019, 01:37:56 PM »
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These set points created by the controller. I don't understand why it happened
Thats because you didn't bother to log just about any of the important requested load variables. They aren't "created by the controller", they're a direct result of whatever you put in the corresponding maps, all of which are clearly documented in the tuning page. |
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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 #4 on: August 11, 2019, 01:40:42 PM »
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What I can see from the log that fuel injector duty cycle is over 100%. Maybe my injectors are too small for that config?
Sigh. I don't know what to say. Set up a boost request that isn't completely retarded and you wont have injector issues either. |
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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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totti
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« Reply #5 on: August 11, 2019, 01:51:44 PM »
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Sigh. I don't know what to say.
Set up a boost request that isn't completely retarded and you wont have injector issues either.
Please tell me why is this boost request retarded? |
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totti
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« Reply #6 on: August 11, 2019, 01:58:37 PM »
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Thats because you didn't bother to log just about any of the important requested load variables.
They aren't "created by the controller", they're a direct result of whatever you put in the corresponding maps, all of which are clearly documented in the tuning page.
Between the 2 runs only the KFLIDMX table was changed. I haven't modified the load maps. I'm loging rl_w and rlmax_w all the time. |
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totti
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« Reply #7 on: August 11, 2019, 02:34:51 PM »
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I found something really strange. Every run when the requested boost was a shit the lambda value was also strange.
The attached runs was after reprogramming the ECU and first runs. I've compared the logs to a "good" one where the requested lambda and actual lambda is similar and the injector timing curve is same.
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nyet
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« Reply #8 on: August 11, 2019, 02:43:53 PM »
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I'm loging rl_w and rlmax_w all the time.
Why only those two? And as far as fueling goes, did you still not learn anything about bts? didn't we walk through ALL of it already? You can't get 11 AFR at those boost levels. You're probably seeing slow intervention which is why your req boost is falling off a cliff. |
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« Last Edit: August 11, 2019, 02:47:35 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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totti
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« Reply #9 on: August 11, 2019, 11:14:25 PM »
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Why only those two?
And as far as fueling goes, did you still not learn anything about bts? didn't we walk through ALL of it already? You can't get 11 AFR at those boost levels.
You're probably seeing slow intervention which is why your req boost is falling off a cliff.
Ok so a k03s with 317 injector cannot handle the my boost request. |
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BlackT
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« Reply #10 on: August 12, 2019, 01:32:23 AM »
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post your and original bin.
I think your load values are wrong, you are experiencing load restriction from ECU
Like i did with wrong tuned load values
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totti
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« Reply #11 on: August 12, 2019, 09:31:06 AM »
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post your and original bin.
I think your load values are wrong, you are experiencing load restriction from ECU
Like i did with wrong tuned load values
Hi, I've uploaded them. |
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nyet
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« Reply #12 on: August 12, 2019, 09:39:10 AM »
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Please log the rest of the load request path.
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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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totti
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« Reply #13 on: August 12, 2019, 09:45:59 AM »
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Please log the rest of the load request path.
I'll do it just I need the disable some other, because I can log only 36 bytes. I read that disconnect the instruments cluster but I need that for log. |
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nyet
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« Reply #14 on: August 12, 2019, 09:51:06 AM »
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I'll do it just I need the disable some other, because I can log only 36 bytes. I read that disconnect the instruments cluster but I need that for log.
Ugh, sorry about that, that makes things significantly more difficult  |
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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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