I put my Orange 04 zx-10r on Full Spectrum Racing's Factory Pro EC997a eddy current dyno today and I pulled 158.96 to the rear wheel with just a slip on. Very happy with the numbers and I am in the process of picking up another head and I will be getting it ported, valve job, re-grinding the cams, head gasket, and degreeing the cams. I am also getting rid of the Two Brothers slip on that was on the bike when I bought it and I am replacing it with a full titanium TiForce system. With no Power Commander the power band is nice and smoothe and I will not add one till I see a real need for it reflected in the power band. The factory pro dyno number was 138.23 and using factory pro's correction factor it would be 158.96 on a dynojet.