Reply To: 09 Gt650R help
it sounds like it could do with a quick check on the carb jets to make sure all is correct , and while its apart, why not give it a long ultrasonic clean job as it will really thank you.
Also pull out your plugs , check they are the correct ones and if you want, you can upload pics of the plugs so we see what your mixture is like.
Have a check on your fuel tap and fuel pump too, sometimes if they act funny, they can hold back a lot , so the carb feels starved off a bit.
Let us know how the fuel system investigations go , before we look deeper elsewhere on the bike.
You got this!