maybe there's a short somewhere in the fusebox or in the ignition system, it's happened on other
cars, I know of and it affects the electronics of the injectors and, possibly could short your coils out.
my old Buick with a TBI, had a similar expirience, the coil kept being shorted by a fault in the fuse block.
which led to the injector misfiring & timing being off as well. and it missed pretty bad along with everything
else, I had to put it in neutral & keep my foot on the gas everytime I had to stop to keep it from stalling out.
it too being fuel injected ticked loud while this was happening. could be as simple as a bad relay somewhere
that they missed, anything is possible on any of these new cars.