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By Swefos
#40876
Is the max injector dc limited to 90%? For me it stops right there at least in the logs.

Setup is 4-cyl bmw M43 running full sequential
2019.11 firmware
Pazi88 PNP board

The log is attached as an attachment. Tuning is not perfect there but the problem can be seen. AFRs are all over the place because I'm temporarily using narrowband lambda.
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By pazi88
#40885
Also are you running the open time only mode for voltage correction? If not change that, because with the old mode, it will show much worse duty than it actually is.

And under injector settings there is limit for injector duty, but you shouldn't run higher than 90% duty. It means your injectors are way too small. 80% max duty would be much better.
By Swefos
#40887
Now I found it :oops: Feeling stupid for not seeing it before. Looked these settings many times but didn't spot it.

I'm running open time only for voltage correction. I know these stock injectors are too small. The engine is stock NA M43B16 with E85 for now and I think it is not too high risk even if my injector duties are near 100%. I was just curious why I couldn't get 100% dc. If I get more power out of it or wideband will tell its really lean I will definitely update the injectors too.
By pazi88
#40889
Swefos wrote:
Tue Feb 11, 2020 9:55 am
Now I found it :oops: Feeling stupid for not seeing it before. Looked these settings many times but didn't spot it.

I'm running open time only for voltage correction. I know these stock injectors are too small. The engine is stock NA M43B16 with E85 for now and I think it is not too high risk even if my injector duties are near 100%. I was just curious why I couldn't get 100% dc. If I get more power out of it or wideband will tell its really lean I will definitely update the injectors too.
Ok, the e85 explains why your duty is that high. Very few engines actually have big enough injectors from factory to run e85 instead of regular gasoline.
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