you need to tee in some check valves for the map sensor or buy a missing link. they will keep you from throwin your car into safe mode....

heres what you should do.

find a direct source to your intake mani.... on my b series i tapped a an fitting into the mani but you could use a 1.00 nipple fitting from lowes.

run a good hard line vacuum hose to the wastegate and to the bov. most waste gates operate on the side port. thats where you put your vacuum line. the mbc goes inline to the w/g.

the check valves should be teed inline to the map sensor and be installed so they vent boost from your map.... the factory map will trigger a fault at like 3 psi so you only want your map sensor to read vacuum, atmosphere, and NO boost.

you can drive it like this but remember your minimum boost setting will reflect on what spring is in your wastgate. so dont boost it and pop ur motor. at like 5 psi this will be ok until you get it tuned. you could also run a FMU with a low boost setting and youd have no problems