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

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

Should have included the other 2 ...

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

It matches your file. As usual, some corrections are needed on the axis.

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 

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

Hi all,

I think I have a working solution now. 
I played around with the speed maps in ABGKL function but that didn't work. I saw cut off for idle speed is set originally to 300kph (VLLABKL) and thought this could be the issue but didn't change anything. I often got closed flap when running in thrust cut-off. Upper and lower threasold (VOABKL and VUABKL) are also set to 300kph originally. If iI set lower threasold to 0 kph I got flap hard closed from gear 3-6. In R, 1 and 2 it was open at any rpm or load :-/

So next try was to check what it is about "Gangauswahl zur Freigabe Abgasklappe" (Gear selection to release exhaust flap / CWGAGKG). The original value is 120 (Hex 78). I tried before to use a lower value but that didn't work, too. Now I tryed 255 (Hex FF) hoping that this will enable the flap-map in all gears. And that was the thing. The flap is working with that now fully regarding to the map. Also when standing still and also cold start.

One hint: The map for the flap (KFABK) is defined from 0-81%. But that is the engine load. So it should be from 0- about 170 or even more if tuned. I didn't change the scaling but could see exactly on VCDS measurement block that the flap is following that map on the corresponding load.

So this is now a working solution for me to start as quiet as possible in the morning. I'm not the biggest fan of try and error, I more prefer understanding the things and configure it then correctly but due to the missing knowledge of the function this was the only way for me. I'm far away of knowing to disassemlbe the code and go through it to find out how it exactly works ;-)

So thanks again for the definition file to Dande and the forum with that huge amount of knowledge. Now I know a very very very little bit of the MED9.1

Greetings,
Benni

Unfortunately, I have to bring up the topic again because I am currently working on my exhaust flap. Unfortunately, I couldn't find any MED9.x Funktionsrahmen where this is explained. In the RS3/TTRS MED17.x Funktionsrahmen, I found some information about it, but not in much detail.

Does anyone know if it is possible to control the flap separately in D/S/Tip mode by adjusting the CW?

At my File i have 3x KFABK and 3x KFABKSP Maps.

At the MED17.x FR it shows this, only on gear.