On top we have the "active" or primary E-throttle map - that's the one in play whenever boost is <10.2psi MGP. The yellow circled cells at 50%AP and 4500RPM illustrate what happens when MGP goes > 10.2 psi MGP, and activates the bottom (shown inactive) E-throttle map - notice the cell is commanding 1/2 the throttle it was before - instant soft boost limit!