Quote Originally Posted by davejones View Post
4.2 pumps aren't electronic. Just the black box that controls whether to power the fuel shut off solenoid.

Unless you're installing the ignition to detect the right key & all the other NATS stuff I reckon you'd have to make this mod anyway if you are putting the motor in something else like a GQ or other truck.
Not quite 100% mate. The later model td42ti did have some electrickery on and a very basic ecu. This uses inputs such as engine rpm, #1 injector lift, tps, coolant temp and one of the output controls the tcv (timing control valve) which is the plug right at the bottom of the pump that you were asking about.