at least that's what i think is happening. my bike is running real rough. like only 2 cylinders are working.
i've changed the plugs and checked the coils. they are fine. airbox cleaned and filter too.
now i did jump start the bike from a car battery. the battery was drained and didn't have time to bump start it or the help to push the bike. so jumped it off a car battery with the car ignition off. i've done this before a couple times and no problems.
but since then, the bike sounds like a twin and has no power. what next? how can i check the ecu?