So I have a 2007 Audi Q7 with the 4.2L V8 that is not idling smoothly and has the following codes.

Random/Multiple Cylinder Misfire Detected P0300 Upper Limit Reached - Intermittent.

Cylinder 8: Misfire Detected P0308 Upper Limit Reached - Intermittent.

Cylinder 6: Misfire Detected P0306 Upper Limit Reached - Intermittent.

Cylinder 5: Misfire Detected P0305 Upper Limit Reached - Intermittent.

Cylinder 7: Misfire Detected P0307 Not A Plausible Signal - Intermittent.

I unplugged be Oxygen Sensors to see if it would smooth out but it did not. I changed the coils from 5, 6, 7, 8 to 1, 2, 3, 4 to see if the codes changed but they did not. I also replaced the plugs with new ones and that didn't help. Hoping someone here might be able to help.