pardon my ignorance

[Randberg at aol.com]

I am working on 2 Audi 5000's One is an 85 non turbo and the other is an 86 
5000s turbo but as a hack non mechanic who will take anything apart some 
terms are Greek to me. BAR (ie 1.2 Bar) What does it refer to and what should 
I be looking for on my turbo? Two other terms Boost and Chip.?? My torbo has 
no relays in the fuse box under the hood. What should I have and where are 
they located. (I don't have the correct cover on the fusebox. Thanks