+1 to reloading firmware and a free air calibration. LC-1's are sensitive to voltage spikes and noise. Is it wired up such that it's on with key in run AND start? If so, that's probably why it corrupted the firmware. Try on in run position only. Not sure of your engine management but with my megasquirt I just enable decel fuel cut, bring the motor to say 5K in fourth gear, let it decel for 5 seconds and then recalibrate. Works fine and I don't have to jack with removing the sensor.