The ALDA is not rpm dependent and already automatically increases fueling according to boost pressure.

I live at 7,000 ft where stock lag was extended and off-boost power was very sad. The VNT turbo doesn't change the maximum power from what it is stock provided you keep the same max boost setting, but now if floored, boost is almost immediate and jumps very quickly up to 16-17 psi where I currently have it regulated. The power delivery is much smoother. Smoke is also reduced, but I did adjust the fueling so that at full pedal there is a slight haze.