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Author Topic: Overboost + KFLDIMX  (Read 46924 times)
nyet
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« Reply #45 on: August 19, 2019, 11:41:54 AM »

If you change rlmax, your misol will drop down. And that will result even worse intervention.
You will need to put higher values in KFMIRL. Than you can lover down LDRXN

Depends on his IOP which i haven't looked at, but yes, you are correct that could well be the result.
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« Reply #46 on: August 19, 2019, 12:43:26 PM »

Depends on his IOP which i haven't looked at, but yes, you are correct that could well be the result.
http://nefariousmotorsports.com/forum/index.php?topic=16562.msg128123#msg128123
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nyet
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« Reply #47 on: August 19, 2019, 12:45:21 PM »

LOL ya, there is zero reason to taper IRL.
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totti
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« Reply #48 on: August 19, 2019, 02:41:21 PM »

Thank you guys. I will change kfmirl and after that lower the ldrxn. I hope that the boost request wont change.
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« Reply #49 on: August 19, 2019, 02:47:40 PM »

Forget about this calculation, without mifa and misol it can't be calculated it this way

The calculation is good with the new logs?
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totti
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« Reply #50 on: October 08, 2019, 01:47:59 PM »

Use values of IMX from this file i dont see here overboosting
But what i see is bad tuned KFMIRL

Your LDRXN at 5250 RPM is 175 % load
--> 175% load and 5250 RPM tru KFMIOP in your map is about 90% tourqe request
--> 90% tourqe at 5200 RPM tru KFMIRL in your map is around 160-165%

Soo at first you are requesting 175% load, but tru tourqe maps ecu calculated to request 165% load. And there all shit start to hapen, it has nothing to do with your IMX





I've made the modification. from 2500 rpm offset +10 at the 85% line. I've checked with linear interpolation and kfmirl is always higher than ldrxn through kfmiop.
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« Reply #51 on: October 12, 2019, 07:29:19 AM »

After change to 386cc injectors and clean the n75 valve I've got this log. There is no overboost(finally) and the values are not bad.
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« Reply #52 on: October 17, 2019, 01:02:03 PM »

Hi!

Please help me. I've modified the kfldimx at lower section 2250 and 2500 rpm. I've made a log and there is an intervention at 3000 rpm. The actual boost is under the required boost. Which table should I modify?

Thank you
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nyet
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« Reply #53 on: October 17, 2019, 02:14:01 PM »

Thats D (Q2)

might want to review your PID basics Wink
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totti
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« Reply #54 on: October 17, 2019, 02:30:55 PM »

Thats D (Q2)

might want to review your PID basics Wink

Thanks. First I need Q2 in my xdf because currently I don't have.
What will happen if I change ldrxn at 3000rpm?  Set it to 180.
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nyet
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« Reply #55 on: October 17, 2019, 02:44:01 PM »

Thanks. First I need Q2 in my xdf because currently I don't have.
What will happen if I change ldrxn at 3000rpm?  Set it to 180.

Leave ldrxn alone. It's fine. Your IMX is also a bit low, but you will trade undershoot with overshoot.
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totti
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« Reply #56 on: October 17, 2019, 11:59:06 PM »

Leave ldrxn alone. It's fine. Your IMX is also a bit low, but you will trade undershoot with overshoot.

Ok thanks. Can you tell me why I have intervention? Is it connected to load? I've read again PID control theory and with D I can compensate the overshoots or accelerate the system. What I saw at logs that the rlmax is lower than the actual load.
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BlackT
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« Reply #57 on: October 18, 2019, 12:41:26 AM »

You don't have intervention, but you have knock. And maybe you MAF is not scaled rihgt
What turbo do you have?
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totti
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« Reply #58 on: October 18, 2019, 12:52:39 AM »

You don't have intervention, but you have knock. And maybe you MAF is not scaled rihgt
What turbo do you have?

K03s. That was my previous log http://nefariousmotorsports.com/forum/index.php?topic=16562.msg129829#msg129829 the change betwwen the 2 softwares is that the KFLDIMX values are higher at 4 points. The reaction is faster ~400rpm but the new software open the wg at 3000rpm... That is because of knock?
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BlackT
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« Reply #59 on: October 18, 2019, 01:11:14 AM »

Sorry I am not expert, but you are asking 12 deg ingition at spool. That valuese schould be lower.  That is only a hint
But it has nothing to do with your PID setings, and WGDC drift. And i don't know what to do there
That is a preaty good K03s,it can archive 185 gs
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