RomRaider

Car is euro e36 328i whir eaton m62 supercharger and some other mods. Recently upgared from 41.0 to 41.3 whit wideband conversion. Now having problems whit idle. Cold start is good but when rpm starts to drop car will shut down. No dtc's. When i adjust fuel maps to lean it runs but it runs rough. It run good whit 41.0. Afr jumps from lean to rich at idle when it happens to idle.

Edit: i copied everything i can from old 41.0 partial to new 41.3 partial. Now it idles nice and good when its cold but when it warms up to 60°c it suddenly goes crazy rich and dies. Starts straight away like nothing happened and die again.

Now i switched back to 41.0 and problem is gone. Car runs good. I would like to know what could be the cause of that becouse i think i will need that 41.3 upgrade some day

Edit: Also noticed that when dying happens. Tps sensor read pops from 0.4%-16.9% whit 41.0 it doesn't seem to effect anything, but whit 41.3 it seem to be reason why engine dies. Changed nother sensor and still same happens.

Still having same issues. Made few adjustments on maf table and it idles now nice, but still goes crazy rich when its starting to warm up. At 60° celsius it goes rich and dies. Tested whit wbo2 unplugged and does the same. Does any one else have this type of issues when upgrading to 41.3?

I experienced this problem. Check that your wideband controller is operating correctly and outputting voltage to the correct O2 input. If the selected wideband O2 input isn't getting voltage, it will go full rich when it enters closed loop.

It does this at idle, so can it go to closed loop at idle? Tested whit out wbo2 and tested whit wbo2 ln lambda 1 and 2. I can log wbo2 and its working.