I just got an aem wideband and want to go ahead and install it soon. Can I take the rear 02 sensor that is in the cat out and put it there? I know the readings will be off, but by how much? If it's only a tenth or so I can compensate for that. I see some dyno tuners tune with a tailpipe sniffer, so that's why I want to know how accurate the reading will be. Thanks.