"More power is always better, and for riders with this kind of thinking you might want to shop around for a European-spec ECU for your American ZX. Kawi tells us that peak power of its North American versions is down about 5 horsies from the European models due to different ECU programming necessary to meet American noise regulation specifications. The European bike makes its peak power 1500 rpm higher than the U.S, bike (at 14,000 rpm). Peak torque is unaffected."
I pulled that from a Motorcycle USA test ride.
How hard do you think it would be to get your hands on one of those? along with the euro flush blinkers?
The early bird may get the worm, but the second mouse gets the cheese.....think about it....