Air intake system
The air filter on the engine is used to filter the air required for engine operation. This device is available on gasoline engines. From the perspective of car players, the air filter installed on the original vehicle seems to have insufficient intake. Therefore, car players have the habit of refitting the air intake system. The product for refitting is made of special chemical fiber. Its biggest advantage is that it can improve the air flow and flow rate into the combustion chamber while filtering the air, so that the fuel can be burned more fully, the unit efficiency is higher, and the engine performance is naturally different. The air filter used in the original vehicle is a disposable product, while the air filter used for refitting in the original installation position with high flow or the mushroom head is made of high-quality materials, which can be cleaned and used repeatedly, More environmentally friendly.
exhaust system
The exhaust gas will be discharged after the engine works, and the exhaust efficiency is directly related to the engine efficiency. The original vehicle design tends to reduce the engine sound, which affects the exhaust speed and reduces the engine efficiency. While the intake air increases and the combustion is sound, the exhaust efficiency also needs to be strengthened. Now it is mostly changed to direct exhaust, that is, changing the middle and front sections of the exhaust system, removing the muffler and other purification devices, shortening the entire exhaust process. Exhaust gas can be discharged after simple treatment. After improvement, the car will accelerate more quickly. The refitted straight row bucket will have ear splitting sound release when accelerating, but the co shock should not be too large, otherwise the driver's fatigue and irritability will be aggravated when driving for a long time.
Oil supply system
The optimum air-fuel ratio of the engine is 14.7:1, but if you want to require higher engine output at high speed and load, you usually need to increase the air-fuel ratio to 12:1~13:1. The refitting of the fuel supply system is to increase the fuel supply amount at an appropriate time, so that the air fuel ratio can be increased appropriately. Timely and appropriate amount are also the basis for judging the advantages and disadvantages of the fuel supply system. The modification of injection fuel supply system can be divided into two categories: hardware modification and software modification. The purpose of hardware modification is to increase fuel supply per unit time. The software is mainly to change its fuel supply program. Because the fuel supply program of the original vehicle is set by taking into account the exhaust gas control, fuel consumption economy, operating stability, and durability of engine materials, the horsepower output performance often fails to meet the needs of users who pay attention to performance. For example, the performance at high speed and high load, which everyone is most eager to demand, often presents the dilemma of insufficient fuel supply, At this time, it depends on the modification of software.
