Retrofit RNS-E into a Bose car again
Just a quick question that has been prompted by me talking to someone with the same car as me who also has Bose, who reckons it's the best sound ever.
I've had my car (56 plate A4 Avant S Line with Bose) for two and a half years. Before I got it, it had had an RNS-E unit fitted at some point. (still got red DIS, although it wasn't coded for Nav when I got the car. S8Craig sorted that for me.)
I've never had any problems at all with the sound system, but I've always felt the sound was utterly average.
I've read a couple of times that when you fit one of these units to a Bose car, you need to swap a wire or two on the wiring harness to make it sound great. Would this make a huge difference to the sound, and how can I tell if it has been done? I have no problem removing the unit by the way to look! Just don't know what I'm looking for!!!
Sorry to drag this subject up again, but I can't find the answer.
Thanks in advance,