Hello, I currently have a 2003 Vulcan Meanstreak, which I have owned for 5 years now. It has 12,000 miles on it as well as a power commander, hypercharger, and vance & hines longshot pipes. Earlier in 2011, after about a month of riding, my engine started to sputter at low rpms and really became a handful to ride. The throttle response was gone and it would jerk untill finally it took off. I took it to my mechanic for service, oil change and a tire, and I told him about the issue. He said it was probably due to the extra ethanol they have been putting in gas. I always use 96 grade fuel in my bike and he suggested a fuel additive that helps with the extra ethanol called startron. He also cleaned my air filter and reoiled it for my hypercharger. This didn't really help my problem. About a week later, while I was riding, the bike was still having the same problem and then my FI light came on. I happened to leave my ignition on while it was parked and my battery later died. I replaced the battery and it helped slightly with the problem, but it still occurs very often. Could my injectors be bad or may I have another issue? Any help would be greatly welcome. Thank you!