[djmtsu]

Boost leak somewhere most likely.

The first pic is nothing, I have the same uncapped pipe there.

The second pic, I don't know what you are trying to show, but it looks like you need to have that vacuum hose going to the boost sensor (stock ECU??) teed off to the wastegate/boost gauge.

The third pic looks like the same style plug as an injector, but I don't know why it is down there. I can see behind it though that the ground tab is not connected. That isn't good at all.