Code 11 is usually associated with a bad or disconnected TPS (Throttle Position Sensor) & although this should be addressed at some point, it's not likely associated with your current problem. Code 6 means the ECU isn't getting an RPM/ignition signal (no spark). So based on what you've done so far this should limit the fault to 3 possibilities..........igniter (most likely), pick-up coil, or ECU.