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Author Topic: Overrun Flames, Gargle, Pop  (Read 354627 times)
Iain
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« Reply #420 on: September 11, 2018, 08:29:25 AM »

I think your problem either comes from CWSAWE or CWDMFAB. (see attachments)



Agreed, everything I've read here seems to point this way - any suggestions on how to find?

All the VAG ME9.1 2.0TFSI files have that exact same cluster that I adjusted @ 1C9C42. 
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eazydaz
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« Reply #421 on: September 12, 2018, 09:19:56 AM »

pls someone can help me find CWSAWE in this file?
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vwaudiguy
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« Reply #422 on: September 12, 2018, 03:29:03 PM »

pls someone can help me find CWSAWE in this file?

Can try 0x15475

Let me know!
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opctim
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« Reply #423 on: September 12, 2018, 11:50:50 PM »

@Iain

My guess is, that injection while deccelerating is disabled, because your torque dampening (Lastschlagdämpfung) Bit (first) from CWDMFAB is disabled.
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KasperH
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« Reply #424 on: September 13, 2018, 12:18:10 AM »

Could also be DENOX in CWSAWE bit 1 since its at TFSI.
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opctim
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« Reply #425 on: September 13, 2018, 12:34:31 AM »

Yes, could be. But the first bit of CWDMFAB completely disables injection.

@Iain:
When releasing the throttle, at, lets say 3000rpm, is there a rough engine break or not?

P.S.: In one case that I experienced, the car only started banging at -40 degree KFZWMN.
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eazydaz
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« Reply #426 on: September 13, 2018, 10:01:11 AM »

Can try 0x15475

Let me know!

dont work
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Martvse
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« Reply #427 on: September 14, 2018, 02:44:19 AM »

What parameters do I need to change to achieve this on a Bosch Me1.5.5?

Pop and bang is already mapped in but I want to adjust it, but I have no idea where to look at.
I have read ZWMIN, but what more?
« Last Edit: September 14, 2018, 02:45:58 AM by Martvse » Logged
opctim
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« Reply #428 on: September 14, 2018, 02:55:58 AM »

What parameters do I need to change to achieve this on a Bosch Me1.5.5?

Pop and bang is already mapped in but I want to adjust it, but I have no idea where to look at.
I have read ZWMIN, but what more?

On a ME1.5.5, check for CWSAWE, CWDMFAB, and set KFZWMN to -40 degrees at the required points. In this ECU, there is noch delta between KFZWMN and KFZWOP. So these are the only things to change.
« Last Edit: September 14, 2018, 03:05:44 AM by opctim » Logged
Martvse
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« Reply #429 on: September 14, 2018, 03:03:48 AM »

On a ME1.5.5, check for CWSAWE, CWDMFAB, and set KFZWMN to -40 degrees at the specified points. In this ECU, there is noch delta between KFZWMN and KFZWOP. So these are the only things to change.

Oke thanks, this really helpfull! Now I can adjust it atleast.
I will reply how the results are over a few hours.
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contrast
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« Reply #430 on: September 17, 2018, 07:47:36 AM »

Here’s my way of implementing on Volvos. Switchable via Four-C chassis settings.

https://youtu.be/kqPC38fQ7FA
« Last Edit: September 17, 2018, 08:33:04 AM by contrast » Logged
adam-
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« Reply #431 on: September 17, 2018, 07:50:23 AM »

Now THAT is cool!
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pablofrtdi
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« Reply #432 on: September 17, 2018, 01:20:44 PM »

On a ME1.5.5, check for CWSAWE, CWDMFAB, and set KFZWMN to -40 degrees at the required points. In this ECU, there is noch delta between KFZWMN and KFZWOP. So these are the only things to change.

hello  Smiley
And how about MED9.1. I have a TT 2.0tfsi S-TRONIC. I have set KFZWMN -30º from 3000rpm to 5500rpm but only follow KFZWMN between 4000rpm and 5000rpm and pops are very very quite.
CWSAWE is set to 1.
KFZWOP is not tuned
I can't search KFTVSA. Comparing with other 2.0tfsi, i think that my .bin doesn't have KFTVSA.
I am only looking for pops when I leave the throttle.
Attached a log --> look at the regions with -30ºC an 15% engine load... second 53 in the log

My exausht configuration is 3" decat. Only mount the rear original silencer.
Sorry for my english, i am from spain
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jecko
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« Reply #433 on: October 03, 2018, 03:50:21 PM »

hi
i ve read all pages many times, but i can't do successfully this funny mod.

i've modded my 06A906032DR like this:

KFZWOP x-20 on 10-20% load from 3000rpm to max
KFZWMN on -24 for first three load rows from 2520rpm to max
KFTVSA on 2.55 from 3000.0
CWSAWE on 1 to address 011211

i can hear some only small pops under 3000rpm (confused)

apprecciate any help.
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Iain
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« Reply #434 on: October 05, 2018, 08:31:36 AM »

Yes, could be. But the first bit of CWDMFAB completely disables injection.

@Iain:
When releasing the throttle, at, lets say 3000rpm, is there a rough engine break or not?

P.S.: In one case that I experienced, the car only started banging at -40 degree KFZWMN.

No rough engine braking to report - it seems perfectly driveable with no odd behaviour other than perhaps a little stutter at very high RPM and light throttle inputs (I assume because car is hitting -30 timing not +32 and interpolation is doing weird stuff between the cells. You really do have to try to make it hit these issues though!

How do you identify the codewords in a file correctly? I found CWSAWE by looking at other similar files  110 004 003 032 005 - there was an identical section of data in roughly the same place on all 2.0TFSi stuff I looked at, and the Cupra pops file had this modified so I assumed from what I had read that this was probably CWSAWE.

So if I understand correctly, CWSAWE stock is 00000011, and modified is 00000000

So as per below, what I (should) have changed is to make the file so that fuel cut is always delayed, and b_denox does not disable fuel cut - everything else appears to already be set to not switch off the fuel;

The function can be configured via the internal codeword CWSAWE:
+ --- + --- + --- + --- + --- + --- + --- + --- +
Bit No .: | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+ --- + --- + --- + --- + --- + - + - + - + - + - + - +
| | | | |
| | | | + ---------------------> 0 = Push-off is only delayed at B_kuppl = 1
| | | | 1 = fuel cut is always delayed
| | | |
| | | + -------------------------> 0 = B_denox does not disable fuel cutoff
| | | 1 = B_denox blocks fuel cutoff
| | |
| | + -----------------------------> 0 = B_desu does not disable fuel cutoff
| | 1 = B_desu blocks fuel cutoff
| |
| + ---------------------------------> 0 = B_dsls does not disable fuel cutoff
| 1 = B_dsls blocks fuel cutoff
|
+ -------------------------------------> is used in% MDFAFI

Or am i making a horrible mistake in translation  Huh

Where can I find a chart showing how the MED9.1 ECU operates, I've seen the diagrams - rather like a flowchart, but I'm not sure what they're called. Perhaps if I study this I can better understand how/why this doesn't work 100%?

Thanks for all the help!


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