A boost controller could easily be used to match turbo boost to supercharger boost levels...

This whole thing is getting blown way out of proportion. Let's say I balance both at a relative 4 PSI, since it isn't supposed to be a high performance build, so who cares. I see no issues with boost trying to reverse through the turbo inlet. If it tries to, the blow off valve will let that air out, just like it does when a manual car shifts. If that occurs, I raise the PSI of the turbo to balance it out. The air isn't going to blow back past the rotors, which makes their restriction and force a benefit in this setup. This isn't rocket science guys. Boost is both relative and adjustable.

This wasn't supposed to be a thread about how awesome this twin charged setup is going to be and how peanut butter and jealous ItHurtz is going to be of it when it's done. I was just looking for tuning advice on adding a second mass air flow sensor.