What did your mech do to fix the misfire? Im having the same issue, misfire in cylinder 2, but I got new spark plug, new coil. Still throwing a code. Even tested new spark plug, old coil and old spark plug with new coil, same result. It doesnt feel like its misfiring at all though. I did have a very ****ed left cat and i got both of them replaced today, yet it still has the misfire code ):

 

easy way to tell if it's the injector is swap it with another cylinder, and see if the problem transfers. If not, then it's the wiring/ECU assuming you've done the same test with spark plug and coil (it could also be the wiring to the coil, but that's easy to check with a spark plug checker in line with the coil/plug).