Rozsko Posted June 24, 2020 Report Share Posted June 24, 2020 I know I am asking lots of questions nowdays and I am sorry for that, but I like to understand how things work and I like if things work as they are supposed to. On the link below you can find a log I recorded today. Cold start and idling for quite some time so that the IAT can climb significantly. As you can see the charge temp table at idle is pretty much 0 right now but previously I had that with various values, but so far I did not find the sweet spot. IAT comp table is 0-d out as I am running modelled fuel. My IAT sensor is in the intake mani, just under the throttle body. There are three issues I don't understand. 1) why the mixture leans out as IAT climbs if IAT compensation is part of the equation? 2) why is the idle more stable when the engine fan is on? This one seems to be caused by more ethrottle control, but the integral gain is 0.05 already and it doesn't really help if I make less or even 0. 3) why the mixture is more lean when the fan is offand less lean when the fan is on? log: https://1drv.ms/u/s!Ale4oyMCOgLThMl2inBDi2JVMdozMA current map is attached Thanks a lot Béla 2020.06.23 - WOT IGN.pclx Quote Link to comment Share on other sites More sharing options...
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