ive recently done a b20
turbo setup with a small audi turbo
everything is done
im just confused about the vacuum line routing
turbo is a kkk k03
internal wastegate
hks bov
car idles and everything fine
just cant figure it out

 

which lines are you confused about?
try not to splice in into any lines more than once.

 

the wastegate
and the bov lines
i got the bov to work
but now i cant figure out the controller and boost gugage

 

Wastegate, you will want to keep the lines as short as possible. does your turbo have a vacuum fitting? if it does just get a short hose and connect that to the wastegate.
what turbo/wastegate are you using? also what boost controller are you using? manual or electric? if its manual you will run the controller wires between the turbo/wastegate. again try to keep all lines as short as possible for the wastegate, and also watch out for the heat.

Boost gauge/Bov
just pick any line really. there are some vacuum lines behind the intake mani, cut in and with a T, you can run whatever you want.
only piece of advice try not to use the same line for 2 things. everything will run more accurately.