NefMoto > Technical > Tuning > The Volvo ME7 thread:
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Author Topic: The Volvo ME7 thread:  (Read 1308563 times)
Sashka_
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« Reply #2835 on: April 13, 2025, 03:37:03 PM »
Quote from: keichi on May 25, 2021, 03:11:01 AM
One word constant in the LAMDSK function must be changed (stock 0x1000 = lambda 1.0).
Is it enough for me to change only this constant?


should I change LAMSOSUF and LAMSOSOF too?

Quote from: keichi on May 25, 2021, 03:11:01 AM
But as soon as you slightly step on the accelerator ECU switch off idle condition flag and LAMFA and LAMBTS comes into play (on my ECU stock TABGBTS is set to -47,50 so LAMBTS is always used).
I logged lambda 1.07. The value 1.07 is maintained over the entire load range.
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keichi
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« Reply #2836 on: April 14, 2025, 06:59:59 AM »
Quote from: Sashka_ on April 13, 2025, 03:37:03 PM
Is it enough for me to change only this constant?


should I change LAMSOSUF and LAMSOSOF too?
I logged lambda 1.07. The value 1.07 is maintained over the entire load range.

Your LAMFA and/or KFLBTS are all 1,0

No need to touch LAMSOSUF and LAMSOSOF.

Fix your boost control. You have massive uncontrolled boost spike. Check KFLDIMX
« Last Edit: April 14, 2025, 07:04:56 AM by keichi » Logged
Sashka_
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« Reply #2837 on: April 14, 2025, 09:04:37 AM »
Quote from: keichi on April 14, 2025, 06:59:59 AM
You have massive uncontrolled boost spike.
But I didn't modify the engine. These are standard volvo calibrations. 
I'll check the wastegate setting.

How can I limit the load range for lambda 1.07? For example, when rl_w is greater than 100%, lambda = 1.0
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Karim
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« Reply #2838 on: April 26, 2025, 04:23:18 PM »
Quote from: Dannyhaddon on March 29, 2025, 12:13:39 PM
20kthj parameter file I made if anyone needs it.

Does anyone have the funktionsrahmen for volvo ME7.0.1?

Thank you for sharing! Maybe you have xdf with fan control to 20KTHJ ? Or address of this maps?
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P2R TF80 EU, RS4 maf, exhaust, K24H(for now), injectors, 340l/h fuel pump, fmic, etc..

Just want to study and do my car faster:)
Dannyhaddon
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« Reply #2839 on: April 28, 2025, 11:00:08 AM »
Quote from: Karim on April 26, 2025, 04:23:18 PM
Thank you for sharing! Maybe you have xdf with fan control to 20KTHJ ? Or address of this maps?

Yes,
3 fan settings

1st setting 018AF7 on
018AF8 off
2nd setting 018AF9 on
018AFA off
3rd setting 018AFB on
018AFC off
8bit
Offset 0.75
Precision 2
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Sashka_
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« Reply #2840 on: April 29, 2025, 02:36:31 PM »
Added the ability to change to lambda values depending on wkrma values.

Code borrowed from Audi RS4 B5 8D0997551K.

The DLBTS map now replaces the KFLAMKRL map, and the KFFDLBTS map replaces the KFLAMKR map.

Test maps:
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keichi
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« Reply #2841 on: April 30, 2025, 04:27:02 AM »
Quote from: Sashka_ on April 29, 2025, 02:36:31 PM
Added the ability to change to lambda values depending on wkrma values.

Code borrowed from Audi RS4 B5 8D0997551K.

The DLBTS map now replaces the KFLAMKRL map, and the KFFDLBTS map replaces the KFLAMKR map.

Test maps:



You start from the wrong side.
Tune your LAMFA and KFLBTS first. You have those maps set to 1,0.
Then tune your ignition to be on the edge of the knock. Its better to prevent knock then to fight with it.
And if you have knock then you shouldn't fight it with fuel but rather with ignition retarding and ECU does pretty good job at that without "hacks".
Read about KRRA in FR and see whats going on there if you want to dig more into knock control.
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Karim
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« Reply #2842 on: May 02, 2025, 01:31:16 PM »
Quote from: Dannyhaddon on April 28, 2025, 11:00:08 AM
Yes,
3 fan settings

1st setting 018AF7 on
018AF8 off
2nd setting 018AF9 on
018AFA off
3rd setting 018AFB on
018AFC off
8bit
Offset 0.75
Precision 2


Thank you! Found:)
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P2R TF80 EU, RS4 maf, exhaust, K24H(for now), injectors, 340l/h fuel pump, fmic, etc..

Just want to study and do my car faster:)
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