Then dont
Indeed. If anything goes wrong, you will wish you took the "blue pill" (Matrix reference). You can't see what is on the other side before you go, and you ain't goin' back.If your car runs great on the current flash.. don't reflash it!! An ECU reflash is not going to give you more power, it is only there to solve driveability issues. If you aren't having any issues, don't change. If you do, you could start encoutering issues, and then your stuck. There is no going back.