AFR auto tune

[Christian]

Hi

I think there is a bug in AFR auto tuner.
I'm using a Techedge WBO2 2.0 which outputs the lambda value.

It seems that AFR autotuner is thinking 1.000 means mixtures of 1:1 or 1:10 and severely leans out the mixture until the car nearly stalls. I saw lambda 1.3-1.4 on my Techedge.

I tried this on a CA18DET, Z32AFM, car idling with lambda 1, O2 feedback disabled and starting autotune. The values in fuel map were changed from around 0 to -57

Sorry I don't have the log files for this, as logging was disabled and my laptop was running out of battery.

Regards
Christian

[Christian]

Hi

I noticed the checkbox "Wideband Display Lambda" and now my AFR reading shows values around 14.7

Still AFR autotune leans out the mixture until the car nearly stalls. I saw values of 1:20

regards
Christian

[Matt]

okay will have a look in the next few weeks and try it on my cars again