That isn't exactly ture ZX-7. ZERO is the map I start with, every time, for the reasonthat, every map is different. So for example, if the DK map at 3000rpm and 20% throttle is at -12, and this bike needs -4, how is starting with that map a better option? It's not every state that needs a different map, it's every bike. I have mapped 2 GSXR1000's on the same day, same exhaust, same filter, and both ended with the same power, BUT the maps were very different in some places, and a little in others. The point is, you will never know by how far, how close etc, and this is why you need to get it mapped onthe dyno, so the map is for YOUR bike.