Maxohio
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« on: March 20, 2019, 12:47:59 PM »
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Overboosting, not following Desired Boost
Hi Nefmoto,
I've changed LAMFA, LDRXN as shown in attachments. Running a full throttle run in 2nd gear, giving 100% pedal at once. It looks like it's having a huge boost peak, and then tempers down below desired.
During the pull you can feel a * hik * which was not at the default map.
Hope someone can help me out.
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Maxohio
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« Reply #1 on: March 20, 2019, 12:51:21 PM »
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Also a image with wastegate
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adam-
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« Reply #2 on: March 20, 2019, 01:10:47 PM »
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2nd gear is dynamic. Use 3rd. Also post CSV.
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Maxohio
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« Reply #3 on: March 20, 2019, 01:14:22 PM »
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Below the CSV file, i'll hope something wrong can be found while pulling in 2nd gear. Tomorrow i will log again in 3th
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nyet
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« Reply #4 on: March 20, 2019, 01:55:18 PM »
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Too much IMX.
You didn't log any of the PID variables, that would help.
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Maxohio
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« Reply #5 on: March 20, 2019, 02:30:15 PM »
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Thanks Nyet, will checkout the IMX ( KFLDIMX right )
Will log boost PID's tomorrow thx!
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« Last Edit: March 20, 2019, 02:36:30 PM by Maxohio »
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Maxohio
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« Reply #6 on: April 02, 2019, 01:25:28 PM »
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Now having 2 spikes.
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nyet
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« Reply #7 on: April 02, 2019, 01:27:40 PM »
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hard to tell w/o pid variables.
Pull more IMX
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Maxohio
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« Reply #8 on: April 03, 2019, 01:37:19 PM »
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Okay, Thanks for reply nyet. Currently having the following logs.
I've changed IMX and i think its getting close? Should i finetune IMX more?
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nyet
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« Reply #9 on: April 03, 2019, 01:43:51 PM »
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Please log the PID variables.
Yes, pull more IMX
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Maxohio
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« Reply #10 on: April 03, 2019, 01:48:14 PM »
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BoostPID-I-Result","BoostPID-P-Result","BoostPID-D-Result Those above are not the PID's you need?
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Maxohio
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« Reply #11 on: April 04, 2019, 11:00:39 AM »
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Logged again, and think i'm getting close. Should i pull more IMX at 3500RPM?
Log file contains all PID values i could find
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nyet
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« Reply #12 on: April 04, 2019, 11:45:12 AM »
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Less KFLDIMX, and likely less Q2
Also, instead of an increasing KFLDIMX, i'd consider a flat KFLDIMX and tweaking KFLDRL to compensate
Finally, you're maxed out on your turbos up top, id reduce redline boost request. You're out of injector anyway.
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« Last Edit: April 04, 2019, 11:46:51 AM by nyet »
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Maxohio
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« Reply #13 on: April 04, 2019, 11:38:32 PM »
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Ok, so have changed IMX with flat line, and lowere LDRXN. Having the following logs now.
Should i change IMX more?
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nyet
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« Reply #14 on: April 08, 2019, 11:42:20 PM »
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You brought it down too low, and you didn't compensate via KFLDLR
Also, log pedal position and throttle plate angle or you won't be able to use ecuxplot properly.
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