Automotive engine power & torque is significantly affected with effective tune-up. Currentpractice of engine tune-up relies on the experience of the automotive engineer. Therefore, engine tine-upis usually done by trial-and-error method because a formal power & torque function of the engine has not been determined yet. With an emerging technique, Support Vector Machines (SVM), the approximatepower& torque function of a vehicle engine can be determined by training the sample data acquired from the dynamometer. The construction and accuracy of the function are also discussed in this paper. The study shows that the predicted results are good agreement with the actual test results