If I'm able to make it to the meet on june 12th I'll bring my laptop and we can update people's DME's. I have a 10amp charger, 20amps is recommended but I have had no issues. I've updated my car without any type of charger, updated other people's cars using a honda civic and jumper cables with no issues. However they have all been MS43 cars. I would definitely bypass and jump the DME relay Jim Conforti mentioned on your thread Dane before attempting it on MS45's.