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  • 09
    21

    Automobile exhaust pipe modification knowledge Daquan

    Nowadays, the modified parts of the *** are not exhaustive. It seems that after installing a large-caliber and surprisingly sound exhaust pipe, the vehicle will run faster. In fact, this is a misunderstanding. The replacement of the exhaust pipe is negligible for the improvement of horsepower. Especially for some small-displacement natural intake vehicles, it is quite difficult to obviously feel the improvement of horsepower. Conversely, a large-caliber exhaust tail drum has a considerable impact on low-speed torque loss, but a smoother exhaust at high speed is understandable for power improvement.    The key to exhaust performance is speed back pressure    Although the four-stroke engine was originally designed to be completely combustible, the exhaust pipe is pure because of the large number of cylinders in the car, the lack of a separate exhaust pipe for each cylinder, and the consideration of noise, space, overall configuration, and mass production cost. Silencing and cooling the exhaust gas, so there will be problems that are not smooth enough to reduce the engine's performance. Therefore, it is better to describe the modification of the exhaust pipe to increase horsepower. It is better to find the horsepower and play the original output.    The patency of the exhaust pipe is also known as the "back pressure", or it can be called back pressure, back pressure, in short, it is the resistance inside the exhaust pipe, and the design of the banana head, the middle diameter The thickness, the total length of the catalyst, the angle of the beam, and the size of the muffler are all related, and are directly reflected in the exhaust efficiency. The main purpose of the modified exhaust pipe is to reduce the back pressure to make the intake and exhaust flow more smooth, and this is also a disguised extension of the valve overlap time to enhance the vital capacity, thus changing the engine characteristics, thereby improving the response and power of the high speed range. . However, the back pressure is not to say that the lower the better, because if the exhaust is excessively unobstructed, the mixed gas will not be completely burned at the middle and low turn, and the torque will be sacrificed, even when the oil is changed. Low, there is also the possibility that the exhaust gas will flow back to the combustion chamber, so a certain back pressure is needed.    The diameter of the pipe diameter is 10-15%    In general, most of the modification of the exhaust pipe starts from the middle and the tail. The common method is to increase the diameter of the pipe, reduce the silencer, etc., and emphasize that the competition will be more linear. Improve the characteristics of the linear exhaust pipe (due to the chassis interference, it is difficult to achieve true straightness), the path is shortened and the angle is smooth and the obstacle is reduced, but everyone should know that the shorter exhaust pipe is the pursuit of high turnover. Horsepower (low back pressure), slender type is good at low turning torque (high back pressure), the reason is that the pressure in the latter tube is high, the low and medium speed exhaust gas will be discharged very quickly, but the high speed will face the weakness of the blockage. However, the former has a problem of slow flow in the middle and low turn, but it can be smooth when it is turned to high exhaust.    Exhaust pipes based on the use of roads should actually choose a longer-length style as a condition for accumulating gas, and then the change in pipe diameter can take into account the performance of the full-speed domain, according to most people. According to the experience, the increase of the pipe diameter in the middle section is almost 10-15% better than the original factory (the engine is not modified), that is, the naturally aspirated engine is around 55-60, and the turbine engine is about 65-70. Of course, if your car's exhaust capacity is large enough, and after a heavy upgrade with the strength of 400hpover, then it is necessary to use more than 80 pipe diameter.    Regarding the arrangement of the pipe diameter, it is more suitable for those who value the torque, but it is suitable for people who value the torque. However, if you are the pursuer of the horsepower, it is suitable for the form of progressive enlargement. The design is to gradually expand the diameter of the pipe, so that the more rapid expansion to the rear, constitutes the exhaust gas speed increase, especially in the case of continuous high speed, which is also a trend of the current modified exhaust pipe .    Please note the resonance phenomenon in the catalyst/intermediate part    In the modification of the middle section exhaust pipe, there is also an important component that is the catalyst and the medium elimination. Although the basic function of the catalyst is to purify the exhaust gas, it has the same effect as eliminating the resonance sound, and is densely packed with many kinds of metals. The composition of the catalyst, according to the modification of the eyes, is indeed a major culprit hindering the smooth exhaust, but also a nasty hot spot, so many people will replace the shell type instead of the tube (straight tube is easy to cause resonance), often just this A small amount of straight through, you can feel the exhaust is much smoother, the sound will not be stuffy inside.Modification of the exhaust pipe, the medium elimination, the catalyst charge, will be done shorter and smaller, to improve the smoothness of the exhaust, but if some of the pipe diameter is too thick, this part will not shrink too much to ensure The power of low to medium. In addition, when you feel that the exhaust is too much and the torque is too much, you may be able to improve a lot of this phenomenon by knowing a so-called "cannonball".    Tail elimination internal structure partition plate and linear type    The tailpipe exhaust pipe, which is mainly used for muffling, is naturally a place where resistance is generated, which involves the design of the inside of the muffler. The structure of the tail elimination can be roughly divided into two categories. The first one is to reduce the low volume by means of a staggered partition to cause reflected waves. The original products are almost all secondary forms, and the second type is a linear type of sound absorbing cotton commonly used in the modification. From the standpoint of fluid mechanics, the baffle-type exhaust resistance must be large, and the horsepower boost is not as dominant as the linear one.    In order to reduce the exhaust obstruction of the tail elimination, it is not only necessary to straighten the passage and enlarge the diameter of the inner tube. It is necessary to miniaturize the entire silencer, and it is also possible to add some ingenuity, such as installing one before entering the tail elimination. The movable valve; or the infinitely designed double-loop accelerating airflow, so that the back pressure is reduced in view of the increase in the rotational speed. The purpose is a good workaround.    The straight line of the modified exhaust pipe tail, the noise absorption needs to be achieved by the muffler surface. In this case, most manufacturers use glass wool, but after a long time, the glass wool which is in a high heat environment for a long time will definitely be deteriorated. There are problems with resonance and loudening. Therefore, some products will now be marked with durable stainless steel wire. This is a perforated outer casing that is covered with stainless steel wire and then filled with glass wool. The stainless steel wire prevents heat from being transmitted to the glass wool, thereby extending the overall life.    Confirm preferences before modification    After reading the above instructions, you must confirm the characteristics you want before modifying the exhaust pipe. It is like replacing the exhaust pipe of Taitong with the self-discharge car. Otherwise, you will lose the low-turn torque. Even high-speed horsepower can't accumulate. In addition, judging whether the performance of an exhaust pipe is excellent or not, in fact, it is a good way to start from the sound. The condition that the exhaust gas is not smooth, the first thing is that the sound cannot be stuffed inside, but this does not mean that loud sound is a good phenomenon. If the sound is large but empty, it is not solid, it must be that its back pressure is too small, and the sound is full and thick exhaust pipe, which indirectly indicates that it can quickly discharge the exhaust gas, so the back pressure should be appropriate and correct.    ** It is worth noting that when you change, the resonance may be too large, and the exhaust pipe may be shaken left and right. At this time, ** replace the hardened lifting lug rubber (overweight) It is also necessary to crack the joint, and a well-designed exhaust pipe can be completed at a considerable cost. Under the premise that the engine has not been greatly modified, the effect of replacing only the exhaust pipe is unobtrusive. Nowadays, many people also replace the tail section of the exhaust gas and remove the three-way catalytic converter. This will definitely increase the emission of exhaust gas. We stand against the practice in the environmental protection position. Being able to grasp these principles, you will certainly enjoy the fun of modifying the exhaust.点击图标下载 App
  • 09
    21

    Car modification: modified exhaust pull handsome wind plus horsepower

    Reasons for modifying the exhaust       The exhaust of the original car is grid-type, which limits the sound and horsepower of the car. The modified exhaust is straight-through, the sound changes, and the horsepower is improved according to the pipe type. At the same time, the exhaust of the original car is iron, easy to rust, broken, and the modified exhaust is made of stainless steel.       Modified drum type and sound       S drum: Mainly improve the starting horsepower, the sound is low, bigger than the original car.       Street drum: comprehensively improve the horsepower of the car, the sound of the street drum can be made into a sports car sound or back pressure.       HKS type: directly improve the middle and high turning horsepower, the sound is like a racing car, just like the legendary sound heard before the car. Workmanship and import Japanese goods are comparable.       M drum: variable back pressure drum, known as the Austrian fox head, the tail drum body paint, very high-end. The sound is very quiet, only a little louder than the original car, and the sound is low. The overall improvement of horsepower is to modify the high-end goods in the exhaust.
  • 09
    21

    Car modification exhaust pipe attention Three major issues can not be ignored

    It is inevitable that there will be some jingling voices in the driving, which makes us very inconvenient to drive. So for the owner, these sounds make us very uncomfortable in driving, and considering the installation of the car exhaust pipe, it can effectively absorb the shock. The effect of noise reduction, and can extend the life of the exhaust muffler system, which is why many car owners have chosen to increase the car exhaust pipe. The automobile exhaust pipe is installed in the exhaust pipe between the engine exhaust manifold and the muffler, and functions to reduce vibration and noise, facilitate installation, and prolong the life of the exhaust muffler system. However, it is necessary to pay attention to the modification of the exhaust pipe of the car, and we can use it without any random one. Some misunderstandings we need to pay attention to. Choose according to the exhaust pipe of the model: There are many styles of exhaust pipes. We can use them without any one. Before modifying the exhaust pipe, you need to pay attention to the style of the exhaust pipe of the original car. Pay attention to whether it is straight or curved. Many owners In order to make the displacement more smooth, the straight type will be selected directly, and the random replacement may not be suitable for the exhaust system. The sound of the exhaust pipe is selected according to the displacement of the car: Many owners have better efforts to vent the exhaust, and they also work hard on the modified exhaust pipe. The owner of the exhaust pipe is not a small number. This is actually wrong, because for the exhaust system, The part responsible for silencing is not only at the tail, but also in the tail section and the middle section of the exhaust pipe. When modifying the exhaust pipe, do not modify only a part of it. The displacement of the exhaust pipe is not thicker, the shorter the better: Many car owners understand the operating principle of the exhaust system. Therefore, in terms of modification, it is wrong to think that the thicker and shorter the exhaust end is, the better. Actually, the displacement of the exhaust system is directly related to these, and more is related to The displacement of the engine itself is related to the engine, so we should not only pay attention to the principle of displacement and ignore the principle of the exhaust system, it will get the opposite effect. The car modified exhaust pipe brings great convenience to our travel, but we also need to pay attention to the details of the exhaust pipe modification. We must not blindly modify it. We must ensure the safety and practical premise, and then confirm whether it is true. Need to be modified.
  • 09
    21

    Automobile exhaust pipe modification method and steps

    Today's *** modified parts should be the intake and exhaust of the car! For refitting enthusiasts who are looking for passion and speed, hearing the roar of a car can instantly make your blood flow faster. You can increase the return rate of your car on the road and let all passers-by look at you. But it’s not a big voice, it runs fast. Some of the modified cars’ sounds are transmitted to your ears when they are far away, but they haven’t seen the car flying for a long time. ** Very disappointed to see a car “crawling” from you. Over.Exhaust pipe modification steps / methods1. Modification into the exhaust is not blindly to the inside of the money, there are many modified brands for different vehicle factions. Japanese cars generally use the very popular HKS intake and exhaust. If it is a European and American car, there will be other brands such as ABT to modify the vehicle. Just like playing basketball and playing football, it is impossible for football players to wear basketball shoes to compete. Therefore, the modification of the exhaust is also very particular, not a good brand will be suitable for their own car. It is only necessary to choose a modified piece that suits your car. 2. In fact, the exhaust is generally divided into straight row and back pressure. The straight-line sound is relatively larger and the caliber is larger, and the exhaust is smooth and suitable for high-speed driving. The sound of the back pressure is relatively smaller than the straight row. During the process of exhausting the exhaust pipe, a loop is effectively prevented to prevent the vehicle from being twisted. The sound will burst out when the speed reaches 2000-4000 rpm. 3. In the case of intake air, most naturally aspirated cars are recommended to use high flow style, because the effect is not obvious when using mushrooms or bellows. The high-flow style is chosen because of the fear of excessive gas storage after replacing the exhaust gas. For turbocharged cars, you must use mushrooms. This will ensure that the engine's intake air is sufficient to ensure the normal running of the vehicle. 4. The knowledge of the exhaust pipe is also very large, generally divided into the middle section of the head section (plantain, head coke) and the tail end. Each segment has its own different effects and ability to improve the performance of the vehicle. How to choose them is also very particular. 5. Head section: Generally speaking, we call it head coke or plantain. Changing the head coke generally improves the vehicle's dynamic performance. It is conservatively estimated that the replacement of the head coke may increase the horsepower by 10-20 horsepower. This is also the primary modification. A good way to improve your power. If you change the head focus, it may cause the exhaust sound to be louder. If you can't stand the noisy riders, it is not recommended to replace it! 6. This picture is a double-out mid-tail swallow drum, which is also the original exhaust pipe, which reduces the welding problem and directly installs the interface between the welding and the head coke. If you are very focused on exhausting, you may have to go through some careful calculations to burn your own exhaust pipe, or buy different brands of exhaust pipes for welding, the effect is very good. It is also more popular nowadays. Some riders use straight rows to pursue fascinating sound waves. The middle section will weld a back pressure hub to improve the power during low-twisting, which will enhance the vehicle's low-twisting power. 7. The choice of the end is * primary modification, when you fall in love with the modification must have lost its fascinating sound. It can completely indulge you in the roar of a car, just like listening to a wonderful performance. The size of the tail is not large, but it is the main source of sound. Just like the above mentioned riders can choose straight or back pressure drums, for the enthusiasts and modified riders can not only use 1 with the exhaust pipe, a "note" is impossible to meet them.点击图标下载 App
  • 09
    21

    Leopard selection Jaguar XE modified CGW valve exhaust

    Leopard selection Jaguar XE modified CGW valve exhaustFor a long time, the German luxury brand BMW 3 Series, Mercedes-Benz C-Class and Audi A4 have been the main players in the sports mid-size car market, and other products are difficult to compete with. With the launch of the Jaguar XE, with its young positioning, cool exterior design, and unspeakable sports talent, it has quickly attracted the attention of many consumers.This fledgling "sportsman" will directly target the BMW 3 Series as soon as it goes public. Everyone knows that the first few pioneers, especially the 3 series of modification cases, are endless, so the Jaguar XE, the little leopard, can finally get the acceptance of this part of the rider, and its own conversion potential is crucial.But to say that the modification is not alone, it can be explained by white. This has to be achieved by some brands to launch the corresponding modified parts. At present, the modified parts for XE are still relatively small, but it does not mean that there is no. CGW, a domestic first-line brand that has always had a keen insight and product development capability for the market, has recently launched a professional exhaust system for Jaguar XE.When it comes to the CGW brand, the modified fans will not be unfamiliar. Founded in 2009, the brand has been determined to become the leading brand of exhaust in China since its inception. Under the implementation of this concept, CGW has invested a lot in the research and development of exhaust products and the quality control of its products. Consumers bring high-quality exhaust products, and compared to the high price of some imported products, CGW's all this is achieved without the consumer having to invest too much.This Jaguar XE exhaust product uses the most popular controllable valve technology. When the valve is closed, the internal pressure of the exhaust gas will be formed, so that the vehicle can be lifted with low twist. When driving in the urban area, there is no need for the uncomfortableness of the breath due to the low twist loss, and the sound is very close to the original. The effect of the factory will not cause the consequences of disturbing the people. When the valve is opened, the low and thick exhaust sounds are instantaneously high, and the horsepower of the vehicle is completely vented. With the continuous increase of adrenaline, the title of the high-performance sports coupe is deserved.If you are the owner or prospective owner of Jaguar XE, and have a very good idea for car modification, please contact the merchant for advice:Jaguar XE mid-tail bilateral single-out valve exhaustAdd valve 8500No valve 4500Shanghai Hao Li Auto Parts Manufacturing Co., Ltd.Website: www.shcgw.cnAddress: No. 80, Jifeng Road, Minhang District, Shanghai
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