If you have a MAP sensor you can do the Diode mod in you go to vwvortex.com and look in the audi 1.8t fax there is a write up,will work the same on any turbo car.

The MBC should run off the turbo to the wastegate.

If you run it on the turbo you will get a more accurate vacuum then on your intake.

The bov should run off a vacuum source like your intake if it is causing it to open find a different vacuum location or use a t fitting an tap into a better source.