Jeff,
Looking at a =Jeff= scan, his O2 sensors are hardly moving. They sit there at .45v. Both of them. He goes in and out of C/L but is mostly in OPEN although his BLMs change???. Learn control is OFF. Also Diff MAP registers a constant .6 volts but when he stabs the pedal,voltage goes up and Scdys Open.
I suggested he put original chip back in and see aht happens. There's no SES.