i have a 03 cavy w/ 2.2 ... every 4 or 5 days it starts missing on accell and missing on decel... been monitoring w/ gm tech 2 but doesnt really help... only code is catalyst insufficiant... i have cai, exhaust, and been using oem spark plugs... anyone know what might be wrong?
forgot to add that when i turn engine off and turn back on... miss stops....
maybe the ignition module is going bad or timing issue? piece of @!#$ ecu?