plugs are a month old..wires almost a year..
would knock retard feel like a bog?

i rarely do over 80
"stop beating on it"... i dont beat on it much.. i have only made it do this a handful of times. i am afraid this IS knock retard, i dont want to blow it up..
if i could just find someone to scan

could it be from a shotie exhaust system with a few splices?