More questions, but no has responded to the original post. I will just ask away and see if these trigger any response:

I have poured over the WDS, and it appears that the connedtor to the X3 DSP amp has to have a few input and output wires swapped. In addition, from what I can tell, the wiring harness is different for the DSP upgrade than the standard system. Its kinda amazing to me that BMW removed a few wires, but I guess the pennies add up. It wouldn't have been that hard to make this thing plug and play. Is this right?

Now my next question is this: When I get to the door, the WDS shows a connector. Where is this connector? Is it in the body, or in the door? Do I have to route extra wires for the biamped tweeters on the DSP system, or are they already in the door to body cable. The WDS is not clear on this. Even if the connector is in the body, it is not clear that the wires for the extra tweeter lines are in there. If they are not, what is the best way to get an extra set in? I know many of you have upgraded your cars. Of course, if you put a crossover in the door, you can get by with one set of wires. If you biamp, you ran wires. How did you do it?

Thanks for any help.