From the research i've done i know it's due to transient fueling, but how do i reduce the rich "spike" before DFCO kicks in? Usually when i let up on the gas it goes from stoich to 12.x-13.x for a few seconds until DFCO kicks in and goes super lean. HPTuners and tech talks about adjusting under the "transient" tab, but that's disabled in truck tunes. They also talk about adjust DFCO, but i'm not sure what parameters to adjust. Any ideas? comments?

 

Are you tuning in Open loop or Closed loop? SD?

 

Is there any real or harmful problem with this condition?

 

SDCL.

I dont' think there's any harm being done, it's just annoying and it bogs a little when it happens. I know you can tune it out because others have done so, i'm not sure what parameters to adjust to do so. It'll probably allow for better MPG too.