I have a 01 z28 ss convertable camaro. I have a misfire ony underload with it. I hooked it up on a friends scanner and the misfire was very speratic underload it constantly jumped from cylinder to cylinder. It has not set any codes thus far on the computer though. Was woundering if this was a comon problum or if anyone had any sugestions???? Oh and the car only has 24k on it