I think my dyno butt is more accurate than that graph since I can feel it when I ride. While overall top speed feels the same, just the acceleration in every gear in GREATLY improved. It reminds me of the sensation I got when I changed the turbo on my Jetta Tdi from factory stock to the bigger European turbo found in the next generation engine. While the turbo pushes more air this little gizmo just pushes more fuel ... I love it!
Be safe, Ride on ...