Wideband Issues

HI GUYS,
I TRIED TO DO SOME LOGGING TODAY USING MY WIDEBAND.
I REMOVED ONE OF THE O2 SENSORS BEFORE THE CATS AND PLUGGED IN MY WIDEBAND. I DID 3 RUNS ALL IN 3RD GEAR. WHEN GOIN THROUGH THE LOG I FOUND THAT MY WIDEBAND IS NOT READING RIGHT.
OFFSET ETC... IS ALL GOOD SO IM A BIT LOST AS TO WHAT HAS HAPPENED.
PLZ HELP ME ON THIS ONE :banghead:
CHEERS
TONYAttachment 27432

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HI GUYS,
I DID A LOG WITH THE WIDEBAND CLAMPED AT THE TAILPIPE THIS TIME AND HAD NO PROBLEMS BUT LIKE THEY ALL SAY IS THAT YOU GET BETTER RESULTS FROM BEFORE THE CATS.
SO ANYONE GOT ANY IDEAS AS TO WHAT IS GOIN ON.
:shrug:
CHEERS
TONY

Anyone got a answer for me ????