Will the car modify the exhaust pipe to increase the displacement

It's up to you to modify that part.

You can change it, but it's better not to change it. Tires, wheels, brakes, shock absorbers, and stabilizer bars are not within the scope of annual inspection, and there is generally no problem; Of course, you can also change the interior, audio, navigation, etc. The overhaul may not be able to pass.

Generally before leaving the factory the car factory is after strict testing and testing after the optional suitable exhaust pipe, after leaving the factory owner to some of the self-admitted "insufficient" or need to "improve" the place to replace the exhaust pipe behavior, if not by professional technical personnel or a certain theoretical calculation, it may lead to adverse consequences, and even affect the normal power of the engine.

Car Modification Note:

1. It is legal to install a rear wing.

This modification does not change the appearance of the vehicle on a large scale, nor does it affect the safety of the vehicle, and does not disrupt the balance of the nature of the vehicle leaving the factory. **The cool rear wing also has a full pull feeling.

2. The modified front bumper is legal.

Replacing the front bumper is a change in the shape of the car, which is feasible after approval, but it can't be changed too much.

3. It is legal to change the color of the vehicle.

4. The frame number can be changed, but the frame model cannot be changed.

The frame can only be replaced in the event of an accident or the frame has been damaged beyond repair, and if there is a quality problem, the frame number will naturally change, but the frame model cannot be changed, otherwise it is no different from changing a car.

It's best not to change, no one checks on the road, but someone takes a photo to report or happens to meet the road check one day, it is very likely to win the bid, and the possibility of the annual inspection is very high, in fact, the most important thing is that the car has changed the exhaust to affect the power, if the two out of the four out also have to tens of thousands of dollars, in order to get an outlet for the sake of beauty, do not change the exhaust, the disadvantage is that it is easy to see in winter, if in order to put the sister, the general female estimate does not understand, of course, the conditions allow, the car is not going to be always open, It's just to play and change to a new one, it doesn't matter, after changing the exhaust, brush the ECU, it should be very good to turn it on.

It is not recommended to change it, it is not beneficial to change it, and it is illegal.

We often see some cars on the road, with a huge sound when driving by, very arrogant and domineering, of course, it is also very cool, many people think that in order to change the exhaust pipe like this, the power of the engine will increase significantly, and it will be more enjoyable to drive, is this actually the case? We often see some cars on the road, with a huge sound when driving by, very arrogant and domineering, of course, it is also very cool, many people think that in order to change the exhaust pipe like this, the power of the engine will increase significantly, and it will be more enjoyable to drive, is this actually the case? I don't think it's useful, my colleague's Loulan has changed, the sound is loud, but the power of the car is not proportional to the sound, the light will scream, but the car doesn't seem to want to go.

A little bit of thunder and rain Changing the exhaust pipe is useless for power. No matter how you change it, the engine displacement, horsepower, and torque are all so big, and the engine exhaust pipe is the same as the original, and it's useless for you to add ten bifurcation pipes to the back. Changing the intake and exhaust system to increase the power energy can be done in the following ways:

1. Change the air grid with large flow (such as mushrooms, washing air filters, etc.); 2. Modified mechanical supercharger and exhaust gas supercharger belong to the category of modified air intake; 3. The exhaust is divided into three sections, ternary, silencer drum, and shock absorbing drum, three parts, which are replaced separately and all of them have different effects; 4. Modify the above two superchargers, which can increase the power by about 30%. Simply replacing the high-flow air grid can increase the speed of air intake, but the total amount will not change. Modifying the exhaust pipe and reducing the exhaust backpressure will increase the power by about 3-5%.

Whether it can increase the power or not, it has to be professionally modified. I've only heard of this, and it's said that the exhaust also has back pressure, and some have a straight exhaust or something. The role of each is different.

OK. 1. The main purpose of modifying the exhaust pipe is to reduce the back pressure and make the cylinder suction and exhaust more pleasant, which is also a disguised extension of the valve overlap time to increase the exhaust volume, so it can change the characteristics of the engine and improve the response and power at high speeds. However, the lower the back pressure, the better, because if the exhaust is completely unhindered, the mixture will be discharged before it is completely burned at medium and low speeds, and the torque will inevitably be sacrificed, and even when the pressure in the pipe becomes lower when the oil is returned, there is also the possibility of exhaust gas flowing back to the combustion chamber, so a certain amount of back pressure is still needed.

2. Modification is to break the balance that has been set by the original factory, and make certain compromises and concessions in terms of durability, comfort and environmental protection, so as to make the power performance more prominent. For the modification of the air intake system, a moderate increase in the intake efficiency of the engine can obtain a certain effect of power improvement (generally not more than 10%).

Advantages: The exhaust head section is the beginning of the exhaust system, which is mainly composed of pipelines, soft connections and three-way catalytic converters. Retrofitting the higher flow exhaust head section can increase the exhaust efficiency and thus increase the power output of the vehicle.

The exhaust section is the hottest in the exhaust system, so replacing the exhaust section with better performance also allows the vehicle to be effectively dissipated.

Disadvantages: If the high-flow three-way catalytic converter is replaced, the exhaust gas often contains more pollutants, which is very unfriendly to the environment. If a poor-quality front section exhaust is chosen, exhaust resonance will also be increased, making the noise in the cabin more pronounced.

Retrofitting the exhaust pipe can increase the extension of valve overlap time; Change the characteristics of the engine, the timing of the torque output, and improve the responsiveness and smoothness of high revs.

Many car owners only know that changing the straight row will increase the horsepower, but after the modification, they feel that the car is not as powerful as before, because they did not think clearly about the effect they want to modify before the modification.

According to the more popular choice in the modification industry, the increase in the diameter of the original engine should be 10% to 15%, that is, the natural aspirated engine is about 52mm to 60mm, and the turbo engine is about 65mm to 75mm.

Of course, the larger the displacement of the engine, the greater the power of the modification target, the corresponding increase, when it comes to the configuration ratio of the pipe diameter, from thick to thin or the same caliber from beginning to end, it will be more useful for owners who pay attention to the need for torque. When the exhaust path is shortened, the corners are gradually smoothed out, and the exhaust resistance is reduced, and the smoothness is relatively improved.