Can't go past 12lbs and car cuts out badly

[60-1]

I was driving in my friends car today and when under WOT we cannot get the car top boost past 12 lbs. We just finished installing a fmic on the car with a type s blow off valve and we can't figure out where to hook the second vacuum fitting to. Could this be the problem? Any help would be appreciated

 

[92awddsm]

The second fitting (The bottom one I assume) is for the quick release feature but it is more likely to leak boost with it hooked up. I would leave it open to the atmosphere. What model is it?1g or 2g? Stock turbo or aftermarket? Could the turbo possibly be on its last leg?

 

[60-1]

1g awd, fp sleeper 16g where should the top brass looking fitting be connected to?

 

[mostapasta]

If your talking about the Greddy type S BOV the only place I have hooked up is the side one off of the intake manifold, like in the picture. I don't believe the bottom one is suppose to be connected with anything. I think you have a boost leak somewhere if you can't build more than 12lbs, especially with all the new piping and such... do a boost leak test to make sure.