Abstract: A dynamic engine performance analyzer system measures engine torque and power continuously from an absorption brake and produces a statistically corrected and deskewed value of torque and power for each of a number of RPM bands. Torque and power values are integrated during each N shaft revolutions as the engine is slowly accelerated through a range of interest. The data are accumulated such that for each 100 RPM wide band in the range, there is a statistical mean value produced of torque and of power. Each 100 RPM band element represents the mean or average of several separate data measurements. A deskewing operation compensates for the fact that the samples may not all be taken evenly throughout each 100 RPM average band during acceleration. The inertial effects of acceleration and deceleration are compensated by adjusting the torque and power values upwards during acceleration and downwards during deceleration.