What, why does my Honda Civic ex special edition
Did the problem surface fast, or did you notice the car condition deterioration over some time? If quickly, its fuel related and I'd look at the fuel pump or the mass airflow sensor; maybe the EGR valve or a vacuum leak. After plugs & coils, look at the plug wires; humidity gets into every crack. Your mechanic replaced the injectors, but a far more likely, and related source is the throttle body; if dirty it can lead to misfires. This is all you need to look at to solve your problem.