Originally posted by markp27
Do you mean overreving without accelerating - if so, then it must be the clutch.
If it were overreving when he released the trigger at the end of the straight, then it would be the LSN being too lean.
Mark.
It is overeving when he hit the triger, right he release it to drop speed little bit. It happned only on the exit from straight , doesn't happened nowhere else.