Bob Bailey's original description of what it does:
This unit is the spark side of the Translator Plus and allows the adjustment of base and WOT spark, just like the T+, but also has a trigger wire that enables another WOT knob that is effective over 1000 RPM. This additional adjustment can be used as an "octane switch" (like when alchy is used) or as a launch/spool retard.
This unit is designed to be mounted inside the car and wires directly to the ECM.
This unit can be used on any GN, (many other vehicles, too). It is compatible with ANY chip or thumbwheel.