I run ZX12-Rs. Same issue, you can search the Dynojet website and find a download to suit your exhaust/air filter setup -and sometimes, it's usually a pretty good approximation.
I had a fairly stock bike running K&Ns, full Akrapovic titanium evolution exhaust, Power Commander, advanced ignition, and the download map suited it really well – checked it on rollers and it was close enough across the range not to remap anything.
I transferred the same goodies onto the next bike – same spec exactly, and used the same map, but she was lean all over. Re-loaded the map, checked everything, no difference so set her up on rollers, and gained 14bhp.
ZX12s are a bit more sensitive to this kind of tuning than Hayabusas because 12s pick up a lot more power from an exhaust change than ‘Busas do, but the lesson to learn is that you have to put a bike on a dyno to get it set up right.
(Then your ‘Busa won’t be quite so far behind the ZX12!!):twisted:
