After putting new plugs in I've noticed a slight sputter every once in a while. It doesnt do it all the time but it is often. At WOT it seems fine, feels a little more torqy if you know what i mean. Its like there is more throttle response and not as much on top end. I can steady hold the throttle part way and let it ride about 2-3k rpms and it will start sputtering and bucking. Anyone got an idea? Fouled plug? Oh yea i've been getting an occasional SES light also. It comes and goes. Come on a few times yesterday right after the sputtering started.