Overview of individual parts responsible for increase in engine power, is represented in this paper. Engine cycles and the role of turbochargers were theoretically explained. The first part of the paper presents and explains the role of turbochargers. Alongside the turbocharger, many other aggregates are presented in relation to the increase in engine power. The plan preventive maintenance, previses periodic oil change and oil filter for solid operation of parts in the engine and turbocharger. In addition to the plan for preventive maintenance, integral parts of the system are responsible for unobstructed and smooth operation of the turbocharger because they are also integral parts of the system. Intercooler is a heat exchanger used for heat dissipation of air compressed by the turbocharger. Along described and explained role of intercooler and turbocharger system, the idea of air conditioning and intercooler connected together is also shown. The second part presents the idea of integration of intercooler and air conditioning in terms of engine power increase when additionally cooling the intercooler. Furthermore, in this work will be presented and thoroughly explained, essential parts of air conditioning. The idea of integration of air conditioning and intercooler and shows the model. Because it is impossible to conduct an experiment and build an actual model the idea is put into practice using intercooler, heat evaporator of the air conditioning and a fan. Temperature calculation of intake air in the cylinder on the engine power is based on the knowledge about ideal gas law equation and Otto process calculation. By conducting the experiment making of intercooler is shown, as well as the engine cooler and engine mounts. After making the carrier is complete, we install turbocharger to the engine. Flange had to be made because turbocharger was meant to increase engine power from another manufacturer and that is why sliding surfaces were not matching. Flange enables fixed placement of turbocharger to fit exhaust manifold. Flange for the fit of the exhaust system has been made alongside the turbocharger flange. Pipes and tubes of circular cross-section constitute the entire air supply system which leads the air into intake manifold of the turbocharger. To run without any faults Bosch pump head with higher pressure and fuel nozzle have been installed. Following that new computer map has to be programmed and engine power has to be measured. Result analysis shows the impact of turbocharger, intercooler, nozzles and the head of Bosch pump to increse of engine power.