i have sirius sat in my 330i also, but mine was factory installed. i know exactly what you are talking about. i was a bit disappointed with the sound quiality as well, but i realized you cant really compare it to CDs. i have flipped sat radio and regular radio back and forth to check the differences in sound; and i think sat radio is still better then regulary radio, but not by much. i can still tell the difference in sound quality. i did notice though that playing my ipod thru the AUX input; i need to increase the volume alot incomparison to regular radio, sat radio, and CDs. are others having to do this also?
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