I asked the H-D dealer to tell me what mapping file they flashed into my ECM - 05 Low Rider 95", 10:25 to 1 cast pistons, SE Air Cleaner, SEII slip-ons(Now Big Radius). He told me the file is 33270-05B. I have a SERT on order, so what does this file mean, as I don't see anything in the SERT info that relates to this file. I want to change a few parameters to the mid-range fuel settings(richen up). Can I open the file with the SERT, change a parameter, and rename it, and save it? I am use to reflashing ECM's, but have no experience with H-D. Thanks for your help.