The PGM-III has sensors for engine rpm, throttle position and gear selection.
It has the ability to control the:
Ignition timing per cylinder. Supposedly to allow for crankshaft torque induced timing offset requirements.
Ignition timing per gear position.
Two air correction solenoids connected to the power jets on the carburetors.
Power valve positions.
Two stroke oil pump solenoid.
The PGM-III is able to be de-restricted via what is commonly called the "wire splice".
This typically takes the power output from 45 horsepower to 60 horsepower, mainly via better use of the power valves.
The Gear Position sensor (GPS) supposedly works to modify the ignition advance in 4th, 5th, and 6th gears to limit the top speed to 180 km/h.
By connecting the 4th, 5th, an 6th gear sensor wires to the 3rd gear sensor wire, the speed restriction can be bypassed.