From the description it sounds like you adjust the screw on the valve, so I doubt it. Just keep a small screw driver/wrench or whatever in the car and pull over and adjust it when needed.

Setup where you have two boost settings are kind of useless IMO, with one exception. I really dont see the point in going through all that trouble when you run pump gas at 8psi and pump gas at 12psi. Just granny shift or something when you dont need it all.

If your second boost setting requires race gas, and your car isnt 100% track dedicated, then yes Id agree with two boost settings.