We had everything ass backwards. He hooked the gauge directly to the vacuum source and he did get a reading of -.5 bar.

Here's how I'm gathering you hook it up (but I know there's a couple ways)

-Connect BOV to vacuum source (either intake Man. to FPR or through break booster)

-Connect that line to manual boost controller

-Connect wastegate actuator to boost controller

Will this setup work?

Also I read somewhere that we should connect the wastegate actuator directcly to the vacuum source to see if it will open up. I had my concerns about this because this is basically a full boost setup and it may damage my cousins non-modified engine.

Another thing is how can you tell if everything is hooked up right. I know you have to put a load on the engine for the components to work, but if you put a load on it and the shit aint hooked up right then you're SOL.