I took the CX-9 into a different dealership for service, as well as to replace the center console yet again for the deformed foam cushions. I had a service tech ride along with me and confirmed the issue with the low speed popping sounds. The tech found a TSB that applied to CX-7s and pre-2010 CX-9s about replacing front struts. After the tech replaced the front struts, the issue still exists. The tech is now escalating the issue to Mazda Corporate to get guidance on how to resolve the issue.