My bike hesitates during acceleration. I have replaced the fuel filter(NAPA Gold), fuel lines and fuel lines in the tank with submersible rated lines. I have also replaced the spark plugs, spark plug wires and check the valves. I struggle to accelerate to 100mph (i know that is fast but I wanted to see does the hesitation goes away). I made my own copper breathing tube and replaced the vacuum lines on the throttle body. Since I removed the fuel rail with the injectors, could I be having injector issues as well? Should I also replace the fuel pump and fuel injectors? I have a 153K on the bike and the fuel pump is probably the original one. I saw these injectors on ebay. Has anyone used these 4PCS New 14lb Fuel injectors for BMW K1100RS K1100LT K1200LT K1200GT K1200RS Initially the bike idles up and down and then settles down and idles normally. By the way, I disconnected the battery so that the ECU would reset itself. It appears as though the bike is have a fuel/air issue. Any help is truly appreciated.