Two options:

#1 it is not enough of an increase to make much difference in current in the injector, since you are looking at that plus the pair of 2-3 ohm injector coils in parallel (additional 1.5 ohms) and whatever the driving impedence of the ECU is, you might see 2.6 amps in the pair of injectors (1.3/injector) with 3.0 ohm resistor and 2.4 amps (1.2/injector) with 3.5 ohms. Guess it would depend on where the injector resistances fall, they are spec'd at 1.5-3.0 ohms. Now if the injectors test out over 3 ohms, then that may start limiting current flow. I have no idea what their min and max rated currents are.

#2 you determine the part is out of spec and replace it.