I will start at the beginning, Didn't run when i bought it. It sat for two years, outside under a tarp in Minnesota. New fuel pump and it runs. But rod knocked, Fresh rebuild, Crank, rods, pistons, zero last cam, air filter, new battery, great voltage from regulator. But engine light on, and over ride button didn't work, plug in on left handle bar was corroded, cleaned that up, now over ride works and no engine code. Look at throttle side plug ins and that switch in throttle housing. Even put plastic between contacts to test. No different, Tried without air filter, same thing. Then pulled muffler off, same thing. Check contacts on throttle positioning censer, injectors, and map censer, all nice. I runs great till half throttle, then just bogs, let up a little and you could drive all day. Anyone??? before I start throwing more at it, LOL...