Hi guys, I'm considering buying a genuine sat-nave unit for my 2007 A3 S-BK S-line with Bose sound system + Parrot B-Tooth. I'm not up on Audi tech, but I am technically minded, so I'd like to ask if I will need any extra leads, will I need VCDS or VAG COM to code it to the car? I don't have the MFSW so that's a little easier I suppose. Are they worth it? cheers guys.