Hi there got myself a k7 gsxr1000 which goes like the clappers at full throttle,but when I'm cruising in traffic and sitting at 4000rpm or so it hesitates along the road ,changed plugs and air and has had superunleaded put in take but issue still there any would be great ,had a k3 a few years ago and never had anything like this , forgot to mention it's the Isle of Man edition with yoshi exhaust. Cheers stevie