Yea, I know what your talking about. Your getting into the technical side of it, I just thought you might of been able to give me more of an accurate #. That's cool though, thanks. I just needed to know how much more HP the S2 has on my RSX-S. I know Im putting down about 175 fwhp stock. I've added a CAI, header & a 5zigen cat back so Im guessing around 190 now. But damn I still can't believe the S2000 loses 40-50 hp when it travels down to the wheels.