So I did my top swap a few months back. Still missfires pretty bad. I will replace the wires/plugs, and then go WOT, and mabye get 1 or 2 missfires through the first 2 gears. These are towards the upper rpms and under heavy loads. It gets worse very fast after this. It almost gets to the point where I can barely get on the throttle after 2 weeks or so.
The missfire is on cylinder 1 and 4, the others seem fine, and I have replaced the wires, plugs, and tried another coil pack. Any suggestions?