Help with unsteady boost

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hipeka

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	Help with unsteady boost « on: June 12, 2014, 01:00:04 PM »

Hi,

I have problems to get steady boost curve. After new version its usually quite steady but after a while its starts to overboost and oscillate after peak boost.
I think its something to do with I-value regulation at boost PID.

Can someone who understand this PID thing take a look at this log file and say what values should i adjust?
Is it just put lower value to LDEIAP, stock value is -30hPa if my map pack is correct.

Car is Audi A4 B5 1.8t Quattro AWT (Euro -version with wideband, 4B0906018CG). Equipped with K03-073 from BEX, BEX exhaus manifold and EV14 550CC injectors.

Here are .csv file WOT run at 3rd gear and my current tuned file.


« Last Edit: June 12, 2014, 01:14:10 PM by hipeka »	Logged

nyet

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	Re: Help with unsteady boost « Reply #1 on: June 12, 2014, 03:16:17 PM »

Are your I limit trims non-zero?


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hipeka

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	Re: Help with unsteady boost « Reply #2 on: June 12, 2014, 09:36:23 PM »

Quote from: nyet on June 12, 2014, 03:16:17 PM

Are your I limit trims non-zero?

ldimxa_0 ldimxa_1 ldimxa_2 ldimxa_3 ldimxa_4

6.35 4.1 3.7 3.95 0


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hipeka

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	Re: Help with unsteady boost « Reply #3 on: June 14, 2014, 01:39:12 AM »

I change LDEIAP -30hPa to -200hPa and now I-value trims stay at zero value. It helps a little but still overshooting. I try to get new logs soon.

I think TLDIAPN is on 19ACA on my .bin but RPM scaling looks a bit weird to this application (10084).
I try to compare mine to 8N0906018CB (225TT) map pack.
Is there any other fully defined map pack which would be closer to 4B0906018CG?

How should i adjust TLDIAPN to get I-adaption work correct?


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_nameless

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	Re: Help with unsteady boost « Reply #4 on: June 14, 2014, 03:59:35 AM »

Quote from: hipeka on June 14, 2014, 01:39:12 AM

look at awm def files or mk4


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hipeka

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	Re: Help with unsteady boost « Reply #5 on: June 15, 2014, 01:46:33 PM »

Quote from: Marty on June 14, 2014, 03:59:35 AM

look at awm def files or mk4

I dont have good def file for CH file.


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hipeka

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	Re: Help with unsteady boost « Reply #6 on: June 30, 2014, 07:35:27 AM »

I-limit trims still creeping up even with increased LDEIAP and zeroed TLDIAPN.

That cause overboost when actual meets requested and also boost oscillation.


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