Thought that was the case, just clarifying. :)
Thats just how the ignition side of an aftermarket ECU works:
Static incoming pulse from dizzy (locked) as a reference for "box" (ecu or jaycar kit)>timing manipulation in "box" (dependant on load [TPS] and transient [MAP] sensors)>ignitor*>coil.
*I reckon it would be a MUST to use an ignitor with one of these jaycar kits just like an ECU as well. Because they fire the coil by grounding it you need to use an ignitor otherwise the discharge from the coil will fry your ECU or jaycar kit if it goes through it.
Ignitors are really simple, they're just a fast switching, earthing relay. Yell out if you want me to explain more.