I would not be telling the truth if I said I felt a difference,,all I can say is it pulls quite well 5 to 6,000 revs then gets going at 8,000 fuck, it goes straight to redline, each gear,,,it did before but when you are just popping down the road to test high revs you are in silly power,speed mode,,hell I had to hang on,,i do not usually change down two gears to feel high rev power but I did :eekhell it pulls,I did one from standstill all the gears to 150mph (private road) 14 seconds,,i was steady in lower gears to keep the front down , a bit scary with the bars all light, I was sat at the front of the seat , I could do better by really leaning forwards if I tried.No but it really goes up top,,i was already happy with the middle grunt of the map I had,its where I usually ride the thing,so I think its still around the same.Quite happy tho,,its a bloody beast,well especially with the bars up in the air and trying to slip me off the back