After warming up my car this morning, I received a CEL due to a Cylinder 6 and Cylinder 8 misfire.

The codes thrown were P0306, P0308 and two P0300 codes for the random misfire.

Also, would it be harmful to drive the car while the codes are present? The car sounds like its running fine, I warmed up the car and didn't notice the CEL til I came back to the car and hopped in.

Would a bad cat cause these codes?

Autozone(lol) "says"

probable causes include

a. plugged or faulty fuel injectors
b. vacuum leak
c. engine mechanical condition.

maybe i simply need a tune up? hmm