periodically i get this code when its first started after a rainy nite, i just clear it and it drives fine.. is this something that i should replace?(knock sensor) or can i just ignore and clear code? i heard it was a big job to do removal of supercharger and intake...

 

I recently replaced one of mine on my xk8 driver side. It was a 30min job but mine is not a supercharged. In the entire time I had the car I replaced both. If the sensor is bad delaying it is not a problem, it is a problem when it is not the sensor or you have a problem and the sensor detects and you ignore it thinking it is the sensor.