If the cam sensor input to the FAST ECU is unplugged, it will run, even if it is a sequential. On a sequential system, the cam sensor input to the ECU keeps the injector event synchronized with the intake valve event; if it isn't hooked up, the injector will fire at a different spot relative to the intake valve event every time you start the car. As previously stated, the B2B system doesn't even use a cam sensor input. Not needed for anything there.
Now, if you disconnect the cam sensor input to the coil pack, your car won't start. However, if you start the car and then disconnect the cam sensor from the coil pack, it will continue to run.