[Max777]

so you're saying the exhaust manifold pressure will force the wastegate door open? I can see that happening, however, a boost controller SHOULD help a little bit. I am curious to see a dyno run with a 10psi setting on the boost controller, I am positive that the power curve would have a lot smaller dip than with just a stock WG/no restrictor in the pressure line.

I guess a BC is not the perfect solution, but it works well enough to merit its use.

EDIT: Anyway, you know a whole lot more about it, so enlighten me with your thoughts.