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Early Intake-Valve Closing (EIVC), which has been suggested to control the load of SI engines for a long time, is applied in this paper to control the load and the boost pressure of a turbocharged SI engine. Load control by means of EIVC reduces the pumping loss at the part load, and boost pressure control by means of EIVC eliminates the disadvantages of the conventional boost control system with wastegate and reduces the pumping loss at high speeds and loads. Another advantage of this control concept is the possibility to utilize the internal cooling effect of the charge when the intake-valve is closed before BDC. The lower compression temperature of the EIVC engine in comparison with the conventional engine is very helpful to reduce the tendency to knock and can be effectively utilized to improve the thermal efficiency.