Hi Everyone. My first post as a newbie rider but unfortunately it revolves around troubles I'm having with my 700km old 2010 Hyosung GT650 EFI. Firstly, I really like this bike. I wouldn't have bought it otherwise I guess. I did buy it after being recommended it by two guys I know who have them and were really happy with their Hyos and still are. Ok, this is where it's at. I run BP 95 as a fuel. That's about all the influence I've had on the machine. It has travelled 700km but this problem started at the end of my first ride. Starts cold perfectly every time. Runs perfectly cold and on the warmup stage. Go for a ride through average city traffic for about 20-30 minutes and then the gradual misfire starts to creep in when idling at the lights. When you pull up to a stop and idle for anything longer than 20 / 30 seconds it would misfire once, then again, and then twice and if you don't blip the throttle it will eventually misfire so baldy it will stop. Three times it has backfired through the airbox and stalled when I blip the throttle to keep it running. I stopped in a back street and tried to get my phone out to video record it but it stopped dead before I could get the phone out. It has had the TPS adjusted and 5 minutes after leaving the repair centre it started again. Exactly the same - no difference at all. Idle speed is normally 1300-1400rpm. I was told that the idle speed is controlled by the ECU and cannot be adjusted. The dealer has been really good letting me come in straight away to have it looked at and explained to me what the various parts do etc etc. But I am really dissapointed how motorcycling has started out for me. I was wondering if anyone else has the same model bike and the same problem and if you have had any joy fixing it? Cheers and thanks.