I've got an 03 RC51 and and older PC3R and all the map for the RC51 or for the usb model PC anyone know where I can get a map for the 2 brother slip on mufflers
No map for any set up is really just a drop in , you need a dyno tune either way. Pick a map and adjust with the buttons in the mean time. If you can tune a carb you can get pretty close. Sometimes I use a G-Tech meter and an oxygen sensor.