ECMlink cant get airflow per rev to change.

[Saff71]

I have a problem getting my airflow per rev to change. I have changed my Mafcomp sliders up to 18% and still no change. Also My Front O2 cycles in a very strange block style way. it dose not look smooth. can someone please help. Here is an idle log.
Thanks.

 

[tay97gst]

I'm still learning tuning as well but I'll point out some things that I noticed that might help you out. First, ISCposition is very high (needs to be around 30). This could be caused by either your biss being out of adjustment or since you're probably using a 1g TB the throttle stop might be too far in keeping the throttle plate open. Letting too much air in through the TB, or any other vacuum leak for that matter will make your airflowperrev higher. Bigger cams will also cause the airflowperrev to increase to around .3 being acceptable i believe.

Also that's how wideband o2 sensors cycle, mine cycles the exact same way, (0.2-0.8).

Hopefully people that know more about tuning will chime in as well

 

[92AWDHX40]

Set the isc to around 30, im kinda where you are right now a bit of tuning with airflow.

 

[EGLTAWLN]

you need to follow MAFRAW hz numbers to see where you are idleing at to figure out what slider to adjust.
your log shows you idle betweeen 500hz and 600hz. those are the sliders that will affect your idle airflowperrev. the sliders you have adjusted, the gm maf doesn't use.
the gmmaf has different hz points than the stock mas does at idle.

play with the 500 - 700 hz sliders and you should see it change.

 

[snowborder714]

My Front O2 cycles in a very strange block style way. it dose not look smooth.

This is because your front o2 signal is being simulated. If you had an actual front o2 sensor, it would be more curvy, but the simulated signal just cycles at .20v and .80v.

 

[1G Eclipse94928]

I have a problem getting my airflow per rev to change. I have changed my Mafcomp sliders up to 18% and still no change. Also My Front O2 cycles in a very strange block style way. it dose not look smooth. can someone please help. Here is an idle log.
Thanks.

If you cant get this done with the help of the ecmlink tutorial videos your better off paying someone to give you a tune, so you dont mess anything up, and probably can learn from what they do.