what is the car tuned on? u can turn the factory o2 off and just run your wideband, if it is not already turned off, easy way to check unplug the factory on and see if it thows a check engine if not then your fine, if so take it back to whoever tuned it and get them to turn it off


and your kind of looking at it the wrong way, the ecu is seeing the narrow band o2, and your gauge is reading the wideband so it wont hurt eather way