Leaderboard

Surprising that it even started. What was wrong with the 1983 EFI computer? Why did you decide to buy the FAST EFI kit? Might be a clue. You showed a picture of your cylinder head temperature sensor, not the oil pressure sensor. And there are two connections on the ZX distributor, one for timing retard when cold and one that controls the coil. Luckily, apparently, you disconnected the one that controls retard when cold. Your coil control wires are still connected. Timing probably still advances when you rev the engine, because that is mechanical and vacuum. There is really no such thing as a plug and play engine control system. You have to know some basics of how your engine control system works, even if you don't know how to tune. You'll have to read through the instructions and the 1983 FSM and compare parts, or find somebody that knows ZX's, I think. https://www.fuelairspark.com/software-downloads