Im going to try and fit the Pro navigation, seem a shame to make the effort without getting the full sysrem.
Booster, Can you give me the part number of the idrive controller, im unsure why some have 1 button, some have 2. For me im not worried about voice control so just the menu button will do me me.
Ive also been looking at the wds. My radio uses fuse f14 10A to the X13815 connector.(as of 2007_09) The CCC usesfuse f56 20A to the same X13815 (Main stereo connector). I think i could just change the fuse from a 10A to a 20A rather than a rewire. Anyone see an issues with this. The only thing that may be an issue with a device drawing more current will be the cable gauge, im sure its the same wire used.
Also have you thought about the cooling pipes?