I ve posted about this problem before, and still can't figure this problem out. My 03 Gsxr 1000 keeps shutting down after about an hour of riding, the engine will just cut out with no fi light, some of the things that I thought it was originally, were, new headers, power commander, tip over sensor, kickstand switch, fuel filter, spark plugs, all these items were changed. I just recently got a major tune up and still no solution. It shuts off in any gear, almost in any rpm range. When it cuts out, i usually get a check engine signal, when i clear the screen i could turn the bike back on immediately, sometimes as soon as i drop it into gear it shuts off, and sometimes it dosen't. I have alot of people scratching their heads on this problem, so if anyone thinks they know what the problem is then im all ears. This problem is pissing me off so much that im about to just sell my bike. This is my last effort at saving it.