boost leak

Hey guys. The search option was not helpful. Looking for advice.

Hi everyone I need help. My car suddenly lost top-end power. The cluster boost gauge seems like it isn't building any boost and sometimes it turns the digital lights in a weird way. But when I disconnect the map sensor the digital lights seems to be ok I already change exhaust and intake...

I have a loud whistling noise start when the car is fully warmed up and boosting.. Very annoying, randomly started.. Although, the day before I had put some wynns stop leak in the tank to try and temporarily fix a small leak. I'm guessing its a complete coincidence and I have a small crack or...