i'm still a complete newbie to all this. i have a 2011 a4 2.0 tdi black edition in white. Absolutely love it to bits first audi i've owned. I was hoping someone could help me out with some information regarding the VCDS? what is this? how does it work? I've seen some enhancements you can make to your car such as the needle sweep with this using codes, and how do you find someone in your area who has this, what are the costs and etiquette in getting to them and getting what you want on your car?
Also what are the best mods that can be done via VCDS?
I'm a total newbie to this so apologise in advance if it is totally basic. Help would be much appreciated