I am in the process of getting a tune from Blackbear performance. I was sent the flashscan and cable to get information from my stock set up. The scan read that my bank 2 trim levels were 16% higher than my bank one, but I had a miss on cyl #3. I replaced plugs and wires and PCV valve. The miss in #3 went away, but the DTC code of P0300 was still there. I am going to change all 8 injectors this weekend and hopefully that will cure the problem. But for some chance it doesn't cure it, what should I check next? Coils, fuel pressure regulator?