rb20 problems when driving

[91240sx rb20det]

my rb20 in my s13 runs good until i get to boost the i loose power but the boost gauge reads 10psi. anyone know what to do i'm out of ideas

[240love]

vacume leaks?

[Jo240sx]

Check the intake tube it might be pinching a hose, thats what happend to me so good luck

[91240sx rb20det]

i'm not sure what goes to what for vacuum. i know 1 from the intake manifold goes to bov. but the 2 vacuum ports in the back i'm not sure where they go. (i just have a hose going to both with the boost gauge t'ing off that