Optimal Combustion conditions and air flow to achieve more sufficient combustion, lower emission and best power performance with low-speed and high-speed with state-of-art technologies such as Cummins proprietary PT fuel system, variable stp timinging fuel injection system, four valve construction, direct injection combustion chamber, extra high fuel injection pressure. The best power performance and the excellent fuel economy with the optimized designs for powertrain air distribution system, combustion system, cooling system and lubrication system. Robust low speed torqud and perfect instantaneous response due to high performance turbocharger matched with cummins supercharging technology system.