Hi guys,

I just try to describe my sometimes a bit odd emanage behaviour and ask you to give me some suggestions what might be the cause of this.

I am just about to refine my maps (using autotune and some own adjustments) - when I drive around and do some runs from low rpm steady accelerating to redline everything seems to work fine. Good AFRs (though still a bit to be dialed in)
When I drive and lets say I try to overtake a slower (about every other) car and push the throttle hard - my AFRs sometimes fall to 9.8 instantly and stay there no matter which rpm/psi. After a while everything works fine again.

What could cause this? Bugged O2clamp signal? OEM ECU going to safety mode?

Thanks for your help!

P.S.: If there would be a way to cut a part out of the log I could post some examples. (Because my log showing this is quite huge)

Greets

 

To show the log portion you want, you might be able to "print screen", paste it into "Paint" and pull out the section you want to show us.

 

Well, yes, I thought about that, but what I was thinking about - if I remember corractly the EMb software was able to cut out parts of the log?!

O.K. here are two screenshots

AFR - yellow
I/J input - orange
I/J output - magenta
rpm - red
tps - green

first clean run - (just a little lean in the middle due to a not perfect map)



second (from the same log) - specially the second right "pull" AFRs instantly dropping to a flat 9.8



Any help appreciated.

 

Where is your AFR reading coming from and is there any real-time "feel" to the change?

 

AFRs are comming from my ZT-2 wbo2, through the 2nd option port. (I have a selfmade connector maybe its an issue there?!)

The realtime change is noticable as stumble.

Greets

 

My first guess would be that your O2 clamp voltage is set too low or absent.

 

My O2 voltage is set to 0.39V (btw it's your autotune re-used as O2clamp triggered by the EMU) But I am also thinking the clamp could have sent a wrong voltage at this point.

Greets

 

Just a thought - is it possible, that my sparks are getting blown out at this points?

Greets