Sputtering/ no power in 2-5 gear need help
I have a 2012 with 2k miles on it. I have never had an issue with the bike, until today. I was riding down the freeway and it started sputtering almost like it wasn't getting any gas. Then it stalled, when I started back up it idled perfect, first gear perfect but as soon as I shifted to second gear and gave it gas it started sputtering, backfiring and died out again. I pulled off again and turned it off waiting a few minutes and then tried again with the same results idle and first gear work perfect but as soon as I shift to any other gear it sputters, lacks any power, and just backfires. The f1 light comes on only after I shift into a higher gear. It will let me ride like nothing is wrong in 1st gear no matter how hard I hit the throttle but as soon as I switch to 2nd or 3rd I experience the issue. Any idea's what this might be? Bike has 3inch straight pipes, a barons big air kit, and power commander.