First rx8 bought 3 days ago throwing misfire code

Hello every one I am new to the rx8 don't know much about it but so far I love it the only thing is that it is throwing a misfire code and cel blinks every now and then I've done some research and read about it but on all the threads that I I've seen they all say it looses power my rx8 runs fine in low or high Rpms no power loss does any one have any idea what It can be it has msd ignition wires they look farly new and so do the coils I should mention it is also throwing an O2 sensor code any ideas. Thanks