Flashing SES light. What's it mean?
"A catalyst damaging misfire to be exact"
What does that mean? Will that go away when the code has been deleated?
Does that effect performanc? I still need to get a tune on the car with the new 393, so I know the car is not running dead on. My one time to the track the car ran "ok". MPH switched between 120 & 115 all day. Not in between, either one or the other.

