For a hot-vee V8 application, like the N63TU, the engine is split into two separate banks. This means each bank of 4 cylinders has it's own turbo, boost control, EGO, throttle, intake/exhaust manifold, and air metering. As of writing this, FOME only supports a single boost control output. With the addition of a second one, it would also be necessary to be able to associate one of the air metering sensors with one boost control output, and the other sensor with the other output.