What is everybody else's thoughts on using the lambda map as a final limitation in a remapped file?
For instence, my car/engine/ecu combination does not have a DPF and no physical Lambda sensor present, so the lambda value for a given amount of IQ versus a given amount of MAF will most likely be calculated by the ecu I suppose and compared to the "Lambda Map for Smoke Limitation".
My duration maps are set up to 100mm³/stroke from factory (I'll leave aside the diiscussion how well it will be calirated for these IQs by the OEMs) and I would not like to start playing with SOI either at this point, I am trying to test how much I can do with the stock hardware without smoke...
On my first files I managed to get big amounts of the nasty black stuff and made good power too...
Back then I lowered the entire lambda map down to "1"...
Now I made a file with up to 350Nm DW and 340Nm on the TL, stock "Nm to IQ Conversion Map" goes up to 450Nm, so no need to touch this one either... I also maxed out the boost maps at 2450mbar (sensor can only read 2495) and I guess this map would smoke heavy again, so my idea was to put like 1.175 in the entire lambda map to get an AFR of just over 17/1 to cut the smoke, apart from the low down areas where I need lower AFRs for acceleration off course...

What is your thoughts on this?

Bit of extra info to avoid confusion
i would cap it off from lets say 2250rpm and about 500-550mg/stroke, so the car would never smoke, no matter any errors I might have made or amounts I added to any other maps...
I know I can calculate the lambda values and then adjust them each value at a time to lets say a max afr of 16/1...
But to cut some corners, I just wondered if there is anyone else who would just level out the "performance corner" as some say, to a given lambda in which they know it would never smoke?
I could for instence pull it down lower and then adjust upwards if I get any smoke...

Hi, sparco,,

I know it's an old thread but, where have you managed to get with this? have you suceeded using it as final smoke limitation?

Best Regards

Sorry for the late response.
I just came back to the forum this week.

Yes it worked very well.
I first lowered the map and checked smoke levels.
Where it would start to smoke I would raise the values again to stop it.

But how does ecu calculate it without lambda sensor? Only thing that goes into my mind is with MAF so this just one more Maf limiter?

Its basicly edc15 smoke map, but with lambda instead of IQ.
Purely calculated to limit IQ at given rpm and airmass

So its the same if maf map or lambda map is limiter, the values should be the same?

Hi, can anyone help me with the addresses where I find the lambda and smoke limiter maps? The software code is 1037386012. Thanks!!