At JUN, in order to challenge the BONNEVILLE SPEED TRIAL 2001, JUN AKIRA SUPRA which carried 2JZ-GTE engine had been developed. In order to attain over 400 km/h, engine was tuned up and realized the 1200ps of the maximum outputs, and maximum torque 100kgm. This power is unrealizable only by the performance of the engine parts. The high power is realized by performing high quality processing to the base engine. We feed back such technology to a user and high quality engine processing is offered by JUN.