I don't have a s-afc. If his problem is the same as mine (might not be but sounds like it) then it's not that the af readings are bouncing around, its the motor runs rich overall after a restart.
Buddafucco said:Shut off & restart= car runs rich, compensate by leaning mixture. Get home, car sits overnight (or until coolant cools all the way down) then the car runs fine so you have to richen the mixture to where it was before you leaned it out. As long as you never shut the car off warmed up & then restart= everything ok.
Doward said:The LC1 is the only WBO2 I can think of offhand that allows you to do a free-air calibration.