About 4 months back I installed an F90BT in my 2006 A4. Since then I have not been able to solve the intermittent FM reception problem. My stock Symphony head unit never had an issue with FM reception, however ever since installing the F90, the FM reception constantly goes in and out.
I am using the powered antenna adapter. I have actually tried multiple versions of the powered adapter (Metra 40-VW53, Metra 40-VW54, and even a non powered adapter.
Anyone have any recommendations? TIA