Sounds like your DME is trying to re-learn*
Go on a drive.. run that tank of gas with the fuel cleaner out..
check the O2 sensor.. and MAF for the umpteenth time.. (HOPEFULLY the LAST TIME)
fill with half tank of top tier HIGH octane.
The highest you can find
Disconnect battery.. like your "resetting" codes.. wait.. Reconnect.
Fire up the car and take it for a drive right out the gate..
Note what it is doing..
After a couple drives.. it'll start changing.. You should notice.