I just recently took this bike on the freeway for the first time since buying it. It has run well, with no problems, for about 2 weeks just running around town. About 25 miles after i started on the freeway, it started sputering and backfiring and then the throttle stopped working altogether, then it completely shut off, but the electrical still works. After waiting about 10 mintutes, starts right up, runs well, but then dies the same way 25 miles later, then the same thing 25 miles later. After the next 25 miles it seemed okay, then i switched on my signal light, the bike backfired simultaneously with the switch being turned on and off twice. Pulled off the freeway, then bike died, and wouldn't start for awhile. After 25 more miles i let the bike rest, then it ran for about 40 miles, at normal, not freeway speeds, and had no problems for the rest of the night. In the morning it ran for about 50 miles at 70+ mph, then died after i pushed the engine to anout 90mph. It died numerous times within the next 100 miles, although no longer at 25 mile intervals. It is also having problems just driving around city streets now. Fuel filter seems to be letting fuel through fine, hoses are good, tank ventilation seems good (tried leaving the cap unscrewed for awhile) There is an aftermarket fuel injector installed in place of points, maybe this is the problem? anyone ever heard of this?