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Author Topic: KFVPDKSD/E and WDKUGDN throttle tuning near wg cracking pressure  (Read 33925 times)
stuklr
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« Reply #60 on: February 24, 2016, 08:36:14 AM »

For those that get it close with the axis change, adjusting the boost PID in the affected rpm helps to smooth out light throttle cruising. Less P term and more D term will make it perfect.
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Lost
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« Reply #61 on: August 27, 2016, 02:07:18 AM »

For those that get it close with the axis change, adjusting the boost PID in the affected rpm helps to smooth out light throttle cruising. Less P term and more D term will make it perfect.



I agree

Along with tuning WDKUGDN in these areas and actually knowing what your setup is capable of - not demanding to much to low. I have managed to get rid of this completely. Nice and smooth.
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prj
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« Reply #62 on: September 02, 2016, 04:45:34 AM »

Lots of talk about nothing. LDRPLS is there to simply tell the ECU which region of the range is controlled by the throttle and which is controlled by the N75.
All that is needed is measure base boost and fill the tables correctly, to make sure that the throttle is used for filling control where plsol < base boost and the N75 used with the throttle slammed open where plsol > base boost.
That's all there is to it. Seriously.
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4ringpieces
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« Reply #63 on: February 14, 2017, 03:18:31 AM »

Am I right in thinking that if the inlet system and wastegates are stock

If msdk doesn't follow actual maf readings

I just need to raise wdkugdn where it's too low?
Stock TT 018ca file, msdk has a massive gap from 2000-5000rpm and then goes over maf readings from 5000-6700 and starts oscillating
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STEVEPHILP
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« Reply #64 on: December 29, 2017, 10:13:08 AM »

Hi,

Looking at this from a Volvo 2.0t lpt:

Where in your opinion does the WG cracking pressure appear to be?

Surely not PR 1.00?
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prj
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« Reply #65 on: January 05, 2018, 09:03:41 PM »

Hi,

Looking at this from a Volvo 2.0t lpt:

Where in your opinion does the WG cracking pressure appear to be?

Surely not PR 1.00?

Not possible to tell because in this file CWPLGU is 0, so the cracking pressure is not encoded into this map.
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nyet
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WWW
« Reply #66 on: February 14, 2018, 06:26:08 PM »

For 2.7t M-box, KFVPDKSD/E are never below 0.96... what am I missing?

Just looked into this. The scaling factor in most maps is wrong; also, there is simply not enough precision to enter the correct multiplier of 0.00305185. The only reasonable solution is to use 0.003053 and precision 1.
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