2019 mustang supercharged, coyote

[Frans]

Need advice please.
Car is running good. only have a lean state at part throttle 3to 4 pound boost. 14.2 afr
Then about 7 to 8 sec it go rich. Need to get rid of the time delay.
Please advice
Regards

[aaronson]

Fuel enrichment delay under power enrichment raise it to like .500 lambda vs .050 stock. Also you can go into transient fueling. Go to acceleration gain and multiply the whole table by 1.50. Transient is a kinda gotta play with it parameter but it helps with tip in fueling. Also what I found is if your upper air flow on
Your MAF is too low it will cause it not to go into PE

[aaronson]

Could also be speed density is out of whack in the tune since those cars utilize it. You can also disable most of the mapped points and just tune with like the last 10 so it makes it easy

[LastPlace]

Please post your tune and log file

[mbray01]

Yes, likely sd calculations, or torque model is off. Setting limiters too high will also do this

[Frans]

Thank you
It work great to change the acceleration gain.
Car is perfect, thanks again