Hey all, long time reader first time poster. My 2011 mk1 fg xr6t has been modified and tuned. A week after the tune it started running sh*t and threw code P1358. We checked the coils, swapped them around etc and each coil works fine. The pcm stopped sending signal to the coil for cylinder 5 though. Got a new computer and car is at ford now for keys to be married to new ecu and them tune to be uploaded into new ecu. Does anyone know why the pcm can sh*t itself like that and what can be done to prevent it from happening again? Nobody can give me answers, seen it happen to another xr6t at the same time from another tuner.
Thanks in advance