I just wanted to make a post on my findings of this issue, so for to possibly help another. So I installed a set of SE204 cams and a Thundermax W/Auto Tune on the scoot just to have a bunch of intermittent issues. Did my research and tried to cover all the normal issues i.e. Fuse panel, battery, wire connections, etc. Now being a 06 street bob I think I have prettymuch rebuilt this whole bike by now with all the stuff wrong from the factory. So I'm starting to think this thundermax is crap, as many have. Well upon much research and inspection I remove the ignition switch and remove the two torx screws off the back. BINGO!!!!! There is a very small void where the back screws to the housing that allows moisture and other crap to get in. After a good sanding with some emery cloth and a nice coat of die ele.grease, BAM problem solved. Hundreds of miles now and not a glitch. Started as a pop backfire progressed all the way to no power at all. Could be running 65 it would die then jump back to life. I beat myself up for a while on this one so hope it helps somebody.