Bought my 2006 330 about 1 1/2 years ago and last July I put a Pioneer AVH2330 in it and it turned out good.

My only gripe with it is that my sub in the back (oem) is always on, even when I have the setting off. It also appears that I have no control either for any sub settings too. When I was doing the harness I never saw anything specific about the sub to be included, so I assume it was part of the rear speaker wires.

Any thoughts?

Edit: Should also note that through a different forum I might've worded this a bit off... But it plays just fine when I mean it's always on. Just no cross-over control/etc...