Calculated EGT below TABGBTS and TLAFA limit met = LAMFA
Calculated EGT above TABGBTS = KFLBTS + the scalars

Final lambda is affected (KFLBTS + (DLBTS * KFFDLBTS)) by DLBTS and KFFDLBTS which are both scalar (delta) values.

TAIKRBTS = 800°C
TANHKSAO = 1263°C
TANVKBTS = 1263°C
TAVHKBTS = 1263°C
TAVHKSAO = 1263°C
TAVROBTS = 1200°C
TAVVKBTS = 1263°C
TAVVKBTSH = 1263°C
TAVVKBTSP = 1263°C
TAVVKBTSW = 1263°C
TAVVKSAO = 1263°C
TKIHKSAO = 1263°C
TKIVKBTS = 1263°C
TKIVKSAO = 1263°C

TAIKRBTS appears to be the EGT threshold here as the other limits besides TAVROBTS are disabled.

But still, if increasing the limits is wrong there is no way that the EGT limit won´t be reached and KFLBTS used for fuelling

it won't be reached right away if u lower LAMFA and remove the timer on it. in my experience it can still be reached on a long pull, or sometimes in spirited driving with a lot of WOT pulls. not always tho, like I said, I raised my TAIKRBTS to 850°c, but I have a 3" cat-less downpipe

Ok, we have two diferent ways to code, as I usually see lambda lower than KFLBTS and it disapers after "0"ed KFFDLBTS I assume that I´m in the second way ( KFZWOP different than zwout triggering DLBTS), considering I have no knock at all RPM ranges and loads :

1 - Can I assume KFZWOP is lower than it could be ? (perhaps 25% ethanol in blend here in Brasil)

2 - To achieve better behavior I should

a - code to "first way" ( "difference between basic ignition angle efficiency and retarded ignition angle efficiency") (if it´s possible, and HOW to make it ?)

b - decrease DLBTS / KFFDLBTS to keep lambda as it should be (don´t look too smart to me at now, but it work very good indeed)

c - increase KFZWOP and keep DLBTS as an ultimate defense for knock (fuel quality)?


3 - I allways though KFLAMKRL was the enrichment related to knock, used to think DLBTS/KFFDLBTS was only to increase enrichment as EGT rises beyond the trigger

I was looking for the maps reponsible for timing retardation at high EGTs but couldn´t find any.
Looked through "ATM" but the only even remotely similar map was KFATZWMS/2 (Kennfeld Zündwinkelkorrektur für Krümmerabgastemperatur).

I would like to temporarily disable the EGT retardation in order to get my ignition maps in the best possible order.

So, that was a doubt mine too...  ECU takes no action related to EGT x advance ?

Make sense as advance make huge difference in EGT, what part of MED9.1 FR it would be (if there is obvioulsy)

I have a simple suggestion. Before tackling a difficult to tune ECU that is calibrated by many engineers at the factory at least get the basic concepts of an internal combustion engine straight. Such as timing effect on EGT, fuel effect on EGT, fuel effect on power and so on.

Small steps...

I agree, and these threads lately are starting to get frustrating. I'm not sure where to go from here, but I feel that it detracts from the site to have a bunch of people that don't understand the fundamentals of what they're doing representing our community.