Originally Posted by Tongie_
You need the updated map , that 4k flat spot is a pain in the arse..
Oh really. Cool, easy fix then, thanks.
"Power builds steadily until about 5000 rpm when the nylon fuel tank cover begins to shiver between your legs from the vibes below, providing warning that the hammer is cocked and ready to fire. As the three-pot sound begins to deliciously wrap around itself, a snappy midrange pull launches the bike in a manner unlike a common Four or Twin. "
LOL, very good discription.
"Edit: Missed your added note. So it's different from the distinct vibrations at about 5k?
Now that I think of it the "vibration" at 4k may be more like a flat spot like Tongie_ mentioned.