Buy a Tactrix Openport 2.0, an adapater cable, and then download the free ECU hacker. Plug it all together and run the program on a laptop. Strap the laptop to the passenger seat, start recording, and at the same time start a stopwatch. Ride the bike. Note the time on the stopwatch when the bike starts acting up. After the ride, look at the time index on the saved logs. If it's ECU/EFI related, the data will be there in the recorded logs. There may also be codes. The whole setup costs under $100, and now you'll know exactly what's wrong with your bike.
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