Tom, my DICE unit is working fine (2005 X5 4.4, trunk mount, Sirius, NAV no DSP), but ever since I installed it I have noticed that there is a vague electronic noise every time I turn on or off the radio or, when the radio is on, when I switch between modes (such as going between Sirius/FM/CD). It’s a sound like one might get when an FM radio is first turned on, for example, sort of like a brief second of static. Everything seems to work just fine, but I am wondering if you have ever heard of this before and what it might be. Could there be electronic interference caused by the DICE unit? I just want to make sure that I’m not doing damage to my electrical system by introducing the DICE unit into it. Thanks for all your help!!