NefMoto

Hi guys

I need Lastschwelle Lambdaregelung map info... Map id is TLRAN.0. this is a motronic 38x map.

i think it's Load threshold lambda control... but i don't have any idea.. how does it works ?

We can brainstorming !

it might be related with full load (WOT) lambda regulation ?

Thank you

I don't know the names by heart in M3.8, but in older Motronics (M2.X) there were two maps based on RPM for Lambda adjustment.
The values in those map were LOAD. First map was for normal running and second map usually with higher values for limp mode without MAF.
If the LOAD was higher than in the map, then lambda control was disabled.

So for tuning you set it to 0, and after you are done, you set it back to values which match your fueling targets.
After you re-enable it, you can monitor the fuel trims.

Hello !

Thank you for your reply.

Yes, you are right ! motronic 3x has a two map. TLRAN.0 and TLRAN.1. but the same two maps.

You can find in attachment map.


i understood as follows.. Can you please confirm ?

 When i set to 0 all values, target AFR will never change. i think this is good point custom tuning.

Why is there a need to lambda regulation ? may remain permanently closed? if not how can i re-scale ?

If this table works like in older Motronics then when you set everything to 0 motronic will be open loop the entire time.
The values are closed loop threshold.

Thank you for your information my friend ! i think we can set to 0 after 3500 rpm.. Is a more stable will be wot?

Come on man, I'd like to think explained it quite well now.
This map does not affect WOT. Just read what I wrote before.

Ups.. Sorry for mistake.. thought differently.
Thank you for additional comments.

This is working for idle and part throttle. Thank you !