Hi, usually my AFR and lambda targets are on point. However, I noticed something odd after checking the logs this morning.
After I shifted up, and let go of the throttle, the car went lean after a while and stayed that way for about half a minute. What exactly could be the cause of this?
I can share the map and the log if anyone is interested in having a look at it. It’s an EJ205 / Emu Black.
TPS is 0% during this whole screenshot:
For me this looks like this can be related to very low injection times due too very low map.
Either ur injectors death times are not correct or ur injectors are simply too big or ur VE in this region is not correct or this is just kind of misfire cause ur engine doesnt combust well with this low dense mixture.
I observed something similar things on my engine…and i set a lower lambda target (i think 0.93) and increased VE that it doesnt misfire anymore.
Thank you, I will check in with the VE map and EGO settings. Since the injectors are performing fine in every other RPM range, I think the settings for that should be okay. Now that you say it, I see that as soon as the lambda target went to 0.93, the AFR corrected itself once again.
I might be dumb for asking this, but if the TPS is 0%, shouldn’t it cut the fuel and ignition, and just let the car roll on it’s own? Or do the oem ECUs also continue spraying fuel in this scenario as well? I know pretty much nothing about how it should behave like during deceleration. I’m eager to learn
U can set the fuelcut in overrun settings where u can set when it is active
There u also a have fueltable u can set ti -100 for fuelcut.
It seems in ur case it is off.
Thank you, that helps. I have one last question.
Typically, what would be the RPM inputs be like for the fuel resume/cut above/below RPM fields?
I set it as 1500 rpm thinking that it should receive fuel when it’s nearing the idle range, but what about the above one? Is there a recommended rpm range where I should stop spraying, or can it be onwards from 1500 rpm?
Would that be stupid, or bother me with errors and side effects?
I would set it to around 50 rpm above the “below” value to avoid jerking when u are at 1500rpm.
i would suggest 2200 rpm for cut above and not sure if 1500 will be enough to have not idle dropping to low but you have to play with that
