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Author Topic: Exhaust Valve control Med9  (Read 4527 times)
purepower
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« on: July 20, 2018, 02:07:11 PM »

Hi to all,

sharing some info on MHH forum, an user told me that the following addresses on a G782_204.bin VW Golf 6 2.0 TFSI 199kw file (attached), are related to the Exhaust Control valve.

I've check on Bosch book and it says that controls is:
- 1D744F = KFBDEMFA
- 1D74A2 = KFBDEMFAD
- 1D74F4 = KFTMFADMX

The values ​​in KFBDEMFA and KFBDEMFAD must describe exactly one operating mode:
Homogeneous (HOM) = 1
- Homogeneous lean (HMM) = 2
Homogeneous layer (HOS) = 4
Layer (SCH) = 8

Default parameterization:
KFBDEMFA: 1 (all values)
KFBDEMFAD: 1 (all values)
KFTMFADMX: 0.0 s (all values)
Stops for all three maps:
nmotbdemfa: 800, 1000, 1500, 2000, 2500, 3000, 3500, 4000, 4500, 5000, 5500, 6000 1 / min
mbdemfa: 0, 10, 20, 30, 40, 50, 60, 75, 80, 90%


So this map I believe are for the injection method. That's is right?

Someone can tell me something more to find the Exhaust control flap map?

Thanks

PurePower
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PurePowerPerformance
gman86
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« Reply #1 on: July 21, 2018, 12:24:58 AM »

Hi to all,

sharing some info on MHH forum, an user told me that the following addresses on a G782_204.bin VW Golf 6 2.0 TFSI 199kw file (attached), are related to the Exhaust Control valve.

I've check on Bosch book and it says that controls is:
- 1D744F = KFBDEMFA
- 1D74A2 = KFBDEMFAD
- 1D74F4 = KFTMFADMX

The values ​​in KFBDEMFA and KFBDEMFAD must describe exactly one operating mode:
Homogeneous (HOM) = 1
- Homogeneous lean (HMM) = 2
Homogeneous layer (HOS) = 4
Layer (SCH) = 8

Default parameterization:
KFBDEMFA: 1 (all values)
KFBDEMFAD: 1 (all values)
KFTMFADMX: 0.0 s (all values)
Stops for all three maps:
nmotbdemfa: 800, 1000, 1500, 2000, 2500, 3000, 3500, 4000, 4500, 5000, 5500, 6000 1 / min
mbdemfa: 0, 10, 20, 30, 40, 50, 60, 75, 80, 90%


So this map I believe are for the injection method. That's is right?

Someone can tell me something more to find the Exhaust control flap map?

Thanks

PurePower

The ABGKL module controls the exhaust flap.
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purepower
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« Reply #2 on: July 21, 2018, 03:16:36 AM »

Thank you very much gman86!!

Found it now: Systemkonstante Funktion ABGKL zur Ansteuerung einer Abgasklappe vorhanden = System constant Function ABGKL for controlling an exhaust flap

Flag register: SY_ABGKL = 1

CDCAKRE allows if: CWSTAKDA
  • = 27 & SY_ABGKL> 0
# = Control of the actuator with f = 1 Hz,
B_rqtakr = 1 and arqtakr_w = 0/100%

So looking at the maps (there are 3 of them) I can see integer from 0 to 2.

As far as I understood the Funftion ABGKL controls the exhaust actuator with a frequency  f=1Hz when integer value is > 0

Then on the table where the values are 0 means 0% on the exhaust solenoid valve.

But 1 and 2 what does it means? 1 = 50% and 2=100% ?


Thank you for your answer again.

PurePower
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gman86
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« Reply #3 on: July 21, 2018, 04:23:04 AM »

Thank you very much gman86!!

Found it now: Systemkonstante Funktion ABGKL zur Ansteuerung einer Abgasklappe vorhanden = System constant Function ABGKL for controlling an exhaust flap

Flag register: SY_ABGKL = 1

CDCAKRE allows if: CWSTAKDA
  • = 27 & SY_ABGKL> 0
# = Control of the actuator with f = 1 Hz,
B_rqtakr = 1 and arqtakr_w = 0/100%

So looking at the maps (there are 3 of them) I can see integer from 0 to 2.

As far as I understood the Funftion ABGKL controls the exhaust actuator with a frequency  f=1Hz when integer value is > 0

Then on the table where the values are 0 means 0% on the exhaust solenoid valve.

But 1 and 2 what does it means? 1 = 50% and 2=100% ?


Thank you for your answer again.

PurePower

Yes. 2 = flap closed, 1= 50% and 0 is wide open.

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gman86
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« Reply #4 on: July 21, 2018, 04:25:01 AM »

Should have included the other 2 ...
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purepower
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« Reply #5 on: July 21, 2018, 04:48:45 AM »

Thank you very much now is clear.
In attachment my reading on RomRaider with Definition updated.

What is the conversion factor for Y axis (Air mass) ? I'm using x*0.390625 but it seems like not same as your.

Thanks

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B3nn1
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« Reply #6 on: January 02, 2025, 03:30:45 PM »

Hello all,

I'm trying to find out the maps of the exhause valve on my Audi S3 with CDLA engine.

ECU partnumber: 8P0907115AB / 0261S02575
SW: 395160 (0010)

I found a good maching damos for Scriocco R where many maps are matching perfect. But I can't find any matching addresses for exhaust valve. So does anyone have a hint where I can find the maps KFABK on ABGKL function?

ori flash file is attached

Thank you very much!
Greetings,
Benni
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prj
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« Reply #7 on: January 02, 2025, 04:59:42 PM »

Yes. 2 = flap closed, 1= 50% and 0 is wide open.

Going to just correct this. 1 is hysteresis There is no 50%.

It switches when it goes to 0 or it goes to 2. The 1 is the hysteresis to prevent it fluttering like crazy.
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Dande
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« Reply #8 on: January 03, 2025, 03:25:35 AM »

It matches your file. As usual, some corrections are needed on the axis.
« Last Edit: January 03, 2025, 03:27:31 AM by Dande » Logged
B3nn1
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« Reply #9 on: January 03, 2025, 05:43:39 AM »

Hi Dande,

thank you so much! Much appreciated! A full definition file, thank you! Will go flashing today  Cool
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B3nn1
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« Reply #10 on: January 04, 2025, 03:28:50 PM »

I didn't had any luck.
I found KFABK at 1D6FAF and it seems to be ok. Until 18% the value is 2 on all rpms. Above 18% it is 0.
If i test the valve with vcds it works, but when i drive it is always open. It only closes on trust cut-off condition accourding to the measurement blocks in VCDS.
I would like to have it closed on low rpm/load. To start with lower noise in the morning  Grin

The Funktionsrahmen floating around from 2004 does not contain any information about ABGKL function, so I can't find out what inputs are used to control the valve.

Could anyone give me a hint how to change the behaviour of the valve?

Thanks again
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Dande
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« Reply #11 on: January 04, 2025, 04:17:59 PM »

Funktionsrahmen for MED17.1.62 Audi R5 TFSI contains ABGKL, but i dont now how much differs it from med9.1.
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