this is my opinion but i would ditch the AEM wideband for a PLX. i have had both and i promise the PLX will be less hassle free since they dont have gauge issues like the AEM do. and they are self calibrating, as well i have tested 3 different plx widebands that are within tolerance to a Lab grade that is used on a dyno. No i never got to test my aem against this Lab wideband but i have also not had any problems compared to my aem that had many.