Long time listener first time caller here. I have searched but still havent found someone with an issue exaxtly like mine and I’m loosing my mind. I’m working with 2 500 ho’s, a 2011 and a 2012. Both have around the same hours on them, the problem bike 110 hours, my personal bike 130. The machine starts and idles perfect, but when you go wide open on the throttle it pops and sputters. I have not only been through the carb myself twice, but I swapped carbs with the 2012 and it still does it. Thought it might be a fuel pump issue, so I swapped fuel pumps and no change. I’m going nuts here!!