THANK YOU!!!! out of all the things on this forum this is the only i did not understand.It's simple (once you see the trick to it). The curve that goes from 70 to 140 is the horse power curve (use the left hand y-axis to read the HP). The curve that starts at 120 is your torque curve (use the right hand y-axis to read the torque). Maximum horse power occurs at around 6,000 RMP. Maximum torque occurs at around 4,400 RMP.