you can use the bov if you really want the silly sounds, just move the maf meter to somewhere before the throttle on the pressure side and vent from there. though i would't recomend it. The transitions get all bugged with the t7. the original by-pass will work just as well stopping any surges.
as for the boost controller, what you'll end up is a t7 apc error and a check engine light. The T7 will monitor the airmass it requests and the airmass it gets, if there is a big difference it will default to error mode with lower requests.