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. 

Can try 0x15475

Let me know!

Could also be DENOX in CWSAWE bit 1 since its at TFSI.

dont work

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.

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

https://youtu.be/kqPC38fQ7FA

hello 
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

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 

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!