def METHOD_NAME(self, speed, torque):
    # Transform inputs.
    speed_transf = 2 * (speed - 800.0) / 1600.0 - 1.0
    torque_transf = 2 * (torque - 30.0) / 470.0 - 1.0
    xs = numpy.array([[speed_transf, torque_transf, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]])
    # Evaluate surrogates.
    r_nox = self.evaluate_surrogate(self.nox_surr, xs)[0]
    r_soot = self.evaluate_surrogate(self.soot_surr, xs)[0]
    r_soot = exp(r_soot * log(10.0))
    return r_nox, r_soot