Since piggy-back fuel computers don't work in closed-loop because of the STFT and LTFT in Honda ECUs un-doing the settings on the piggy-back, I'm wondering whether the new Greddy E-Manage Ultimate would work.

Reason being is the E-Manage Ultimate has 2 new features:

1. Target AFR setting
2. Adjusts fuel by altering injector pulse width

The Target AFR feature is supposed to allow the E-Manage Ultimate to constantly adjust the AFR to maintain the target setting. Even in closed-loop, when the STFT and LTFT try to re-adjust the settings back to stoich, would this feature allow the E-Manage Ultimate to keep the settings (somewhat) since it's also adjusting?
Or would this just create chaos in closed-loop as the ECU and E-Manage would both be constantly adjusting the AFR?
Thanks.