I hit an ice chunk and cracked it. It has since been repaired. I put dielectric grease on the coil packs and some connectors that could get wet. Looked at cat temps on the 3 hour drive. Stayed arounf 1200 to 1500 degress. So idk. I still get zero trouble codes. This problem is undiagnosable. I dont understand how to data log. Dont even know where to begin. Dont even have a tuner to take a look at it anyways so that wouldnt do any good. Besides it needing to be the same conditions to get it to show on a log if I'm even logging the right parameters. This is probaby Ford's way to shift a few more mustangs. Make hot hatches, but do it unreliable so that way they buy v8 garbage.