haha yeh i knew thatt just had nfi where it was/what it did (i could guess pretty well). just to let people know that i also serviced my coilpacks yesterday and afterwards i had the same problem again. this time i just went for a bit of a longer (easy) drive and once the check engine light stopped coming on i pulled over and turned the engine off, turned it back on and problem solvered. maybe ecu just needed longer to re-adjust while driving. just in case anyone else gets the same problem and worries about it too...