Okay. I bought my 03 Vortech supercharged GT about a month ago. The car ran great when I first bought it. I took it to the track and ran an 11.89 in poor conditions. Last week I noticed a slight stutter when I take off slow. The engine is running rough, not "bad" but enough to notice. At WOT I do not notice a loss of power. The stuttering is getting worse. I have ran a couple of tanks of gas so I know it is not that. The vehicle has 60k and I know the plugs have been replaced with NGK plugs. NO CHECK ENGINE LIGHT. I think if it was a fuel pump or filter it would sputter at WOT. Please help!!!!