Hi, im new to the forums and also new to the Hayabusa. I just purchased a 2005 with 16k miles. It came with a 10 inch extended swing arm, Full Hindle carbon fiber exhaust, Dynojet power commander and a K&N air filter. Its also been lowered. When i bought the bike, the guy informed me that its been rode some since he bought it but the gas is a little old. So after getting the bike home, i rode it down to the gas station to fill it up which was about 3-5 miles. After filling up the bike and enroute back to the house, the bike just completely cut off. After pulling over and cranking it back up with no problems, it started off down the road for about a mile and it did it again. This time the F1 light started flashing. I was thinking it could be old gas and it will work itself out but i took the bike out tonight and the same thing happened. It seemed to do it once the bike was warmed up. I couldnt find to much information on this subject but i came to the conclusion that its a fuel pump going bad? The power commander is messed up or needs re-mapping? or possibly something with a rev limit? I am going to try and unplug the power commander tomorrow and ride it if the weather allows, Does anyone know what this most likely is? Im ready to ride this thing with no problems!