anyone else experience this. My tuner is spot on for the rest of the bikes range and the bike runs like a top until I get about 45 miles on it and the motor is hot. Seems to only happen in hot weather. After I accelerate through first gear the bike runs fine but off the line I have to rev it up to get it to go . Any ideas on what could be happening. I am a bit baffled . thank you for your responses.

 

I wonder to say the hot gasses from your breathers may be the culprit .....

I have noticed the same issue's before switching to the DK Outlaw air intake with external breathers, seems to be better since the switch...........

Just one guess on what it might be...............

Live Free = Ride Free.............