If the bypass valve on the s/c is vacuum actuated and you move the TB downstream of the s/c you will lose your vacuum that opens the bypass valve, so it would always be shut and the s/c would always be pumping out full boost.

 

mmmmmmm, full boost.....

 

All you have to do is move the vaccum referance......A simple hose.

 

Mine is referenced at the FPR.