hello everyone i just bought a used 03 cts luxury 3.2 auto, with 64k miles on it. it is pretty nice car. i have been searching and searching the forum. (took ages to find the search que). i would like a step by step instruction on how to install a aftermarket dvd/navigation unit in place of the cassette and cd. i have sen photos and a bit of tips but not a guide, for instance step 1. move shift lever away from center stack. etc. on a second note i will be replacing the springs with a set of eibach sport set and a cold air intake. i have reflashed my audi with an apr ecu tweek and it was the best bang for buck performance upgrade. anyone know if there is a ecu flash for the cts. last but not least thank you very much for your help and this i am sure to not be my last questions. :).