for me,

since 2001 i have used EXT wastegates on all of my YB`s (one of the first in the uk roadgoing saffs so i am told)

one for open wastegate or "screamer" pipe noise

and two for dead on accurate boost pressure precision when setup correctly

ive ran everything from T3.48 to Turbonetics T61/66 (.88 to 1.03AR) ext gated and it will only give you a gain in midrage and top end performance

so 100% win with no loss when built propperly

not a shonkey cut and welded upper 2wd manifold setup, these are just shit! Dont do that as flow rates are shocking