I just got the EBR ECM and they told me all you need to do was install and do a TPS reset. I ask the same question here and decided to follow the advise from the replys and disconnected the battery, makes it easier for installation. After installing do a tps reset and a good "learn" ride keeping the rpm's between 3-3.5k for about 30 minutes, stop the bike and do another tps reset. Also, if it is the race ecm, you will tell a big difference. Mine is now a BEAST and seems to climb through the RPM's and pulls so much harder. Hope this helps.