After much research it seems as if the Audi has many brittle vacuum lines and hoses.
Is there A kit or something I can buy to replace all of these "brittle" lines?

What lines or hoses are the most common to crack?
Blessings

 

Go to Flex Technologies - Your Silicone Hose Solution and replace them all.

 

20' should do since that'll give you some extra. Just make sure you replace them one at a time so you don't lose track of where they all go. Just pull off a section, match the length, cut, and replace. Exact fit: http://www.siliconehose.com/commerce...per-vb-014.htm

 

^This. 20' will be plenty, I bought 15' when I did mine and had extra.

 

Is there a diagram? Do you know approx how many there are?
Do people sell the bentley manual on here used? I bought a service manual on cd and it is not MAC compatible, aka, waist of money for me.

 

You won't need the bentley for this if you just take them off and replace them one by one. I ordered 12' and had extra still

 

Exactly. Do one at a time and do every one you can find.

 

I bought 15ft. of 7/64" line at an auto parts store and had extra left over. I didn't need any hose clamps because this size fits nice and tight. Like everyone says, do one at a time so you don't forget where one goes. There should be a diagram on the bottom of the hood in case you feel you might miss one.

 

Is 3mm (.12in) ok?

 

I'm pretty sure it's 3.5"