I just purchased my '01 X5 4.4 w/DSP and was not satisfied with the stock stereo so I decided to upgrade a little.
A put an Alpine 700w amp and two 12" Alpine Type S subwoofers in a custom box in the back. Since then, about two days, my X has been rattling like crazy. Has anyone else had these problems? Any ideas on how to fix it? I like to listen to my music pretty loud and I just want it to sound clean when the bass hits. Thanks for the help.