worsley

Hi all, I am new to this community and I'm hoping you guys can offer me some help. So I have just bought my self an A4 Avant SE 2.0 TDI its on a 59 plate. I love the car! I have a few things that I want to add to the car and also a few issues, firstly let me say I have spoken to my local Audi dealer and they couldn't offer much in the way of help. 1. I want to add a sat nav to the head unit or the display - can anyone recommend what do I need and where I need to start looking for this. 2. I want to add parking sensors to the front and rear of the car which I want to work with the lcd screen - again what do I need and where do I start looking? I have a few issues with the car firstly the speakers in the rear of the car, they are quite a bit quieter then the speakers in the front of the car, its the none bose system. I know the speakers in the back are run off the amp and the front off the head unit. I know that with the symphony head unit you could change the setting using the hidden EQ, I have the symphony II + I think and I don't believe there is that feature on there, is there any way I can turn the rear speakers up if so how?? The next thing after buying the car I had a look through the paper work and found a letter from Audi to the old owner, the letter stated that the engine in my car is one of the effected engine's in this whole emissions problem, what do you recommend I do regarding it? Anyway like I said I hope you guys can give me something to go off as I can't find anything online. Thanks again.