I was doing about 120 the other day and i went to stop and found my brakes were barely working so i stopped to check it out. It was idle surging up to 2500 rpms. I later found that a block off came off my intake manifold and that my brake line has a hole in it. On high boost i run 20 psi and after all this happened my high boost is 13 and low boost only runs on wastegate. Any idea what could cause this? Thanks