I ordered a Tactrix cable to reflash my ECU and to help me get past emissions. Regardless, I was thinking about reflashing to make sure that I have the stock mapping. I called the dealership to ask if they could reflash to stock and a person at the service desk told me that if I have an aftermarket mapping, then my ECU could be ruined if they try to reflash it for me. What do you all think about this? Would it be safe for me to save my ROM and reflash to another stock ROM or maybe even update to a stage two map? Or would my ECU be ruined? Let me know what you all think. Thanks in advance for the help. My car is an 02 WRX and as far as I know, it hasn't been reflashed before.