if i dont have a vacumm source from the turbo can i just tap the vacumm line for my boost gauge for the lower wg vacumm line?

Also for the upper wg vacumm source...if i'm not running a boost controller...do i leave it uncapped or capped??

 

Use a separate line for the boost gauge from any pressur source line on the intake manifold.

Upper wg source leave open
Side wg goes to the side of the compressor