Innovate's LM-1 Manual specifically states
Quote:
WHEN INSTALLED IN THE EXHAUST, THE OXYGEN SENSOR
MUST BE CONNECTED AND OPERATING WITH THE LM-1
WHENEVER THE CAR IS RUNNING. AN UN-POWERED OXYGEN
SENSOR WILL BE DAMAGED WHEN EXPOSED TO EXHAUST GAS.

p.6

If your datalogger is setup permanently, then leave the WBO2 in unless running leaded fuels. If, like me, the logger is portable, then when not using it, just remove the WBO2 and install the plug. It takes more time for me to remove the wires and T into the vac line than it does to remove the sensor itself.