Thanks for the feedback. I'm ordering some new IN600 injectors and a new FPR just to be on the safe side. Also getting another stock PM6 ECU just to have as backup in case the issue re-occurs and it turns out to be the ECU.I'm surprised I didn't see this thread. I used to have DSM injectors in my car. Last year at the track, on my second lap, I had my car start running like crap. AFR's were extremely rich. Throttle off was still showing 16.0 AFR's. I'm sure that is what happened to me. I had an extra set of injectors with me that day, I swapped out to the original injectors and it ran fine for the rest of the weekend.