i just put a stage 1 air filter and power commander with respective map on my nightster and now my check engine light comes on as i turn the switch then goes off as it should, but after about 2 seconds it comes back on and stays on. i start the bike and it runs a little rough till it warms up then it sounds fine but the check engine light is on. i also did all the work my self. is there something i did wrong or is this something that the dealer would have had to clear the codes or??? thanks for the help!