So I guess I'll just replace the sensor. I don't have a multimeter to check resistance on the connectors and what not. The car is fast today. Maybe resetting the ecu takes time to gather enough data on driver habits? I dunno. Seems like she hates me for a few days after I pull the plug

 

That's usually what happens when the ECU is learning the long term and short term fuel trims from scratch. The fuel and ignition maps will be a bit off for a little bit.

 

When you change the ECU, it will take time to relearn. Same with the transmission computer.