I didn't put this in my first post but I'm using a street MM with MCC unlock and GH tunes. I had a small battery charger on 6 amp setting on while I was loading different tunes. The batteries are probably the originals (2010)? The first 2 times everything worked fine. After that one time it wouldn't start at all. The next time it would start once and then wouldn't start again. What happened the last time is when it got done loading the last tune it wouldn't start. Upon letting it sit with the charger on it for around 30 minutes. It seems to start and run fine? Any idea what the issue is or was? Am I doing something wrong? Glad that it seems to be working but I wasted 3 hours screwing around with it yesterday.