These days many automakers are trying to improve both fuel consumption efficiency and performance through engine downsizing. To achieve the objective, it is very efficient to apply the turbo charger system to provide a large amount of air to increase an engine performance. The intake system including a manifold and a port plays a role to make a tumble flow as well as provide an air mass flow to the combustion chamber. A high tumble flow is necessary in a turbocharged engine to prevent knock and SPI(Stochastic Pre-Ignition) due to the high pressure and temperature in a chamber. CMCV(Charge Motion Control Valve) is recently applied to many engines for a tumble flow, but it requires high cost, so the high tumble intake port without CMCV was developed in this study. TACM(Tumble Axis Control Method) was applied to develop a high tumble port, and as a result, the flame propagation speed got faster by average 9.1% compared to the base port. A combustion chamber with the flat squish was adopted to help a strong tumble motion and augment combustion. This paper shows how to develop the high performance PFI turbocharged engine by CFD analysis which was performed to optimize an intake port.