Why did "fake exhaust" become the standard configuration of new cars overnight?

With the popularization of direct injection technology, the number of engines using traditional manifold injection has also decreased. Although the direct injection engine has more power and lower fuel consumption than the manifold injection engine, it is precisely because of this fuel injection mode that more particulate matter is produced than the manifold injection engine.

This particulate matter will not only be re-inhaled into the engine along the EGR (exhaust gas circulation) pipeline, resulting in carbon deposition on the back of the throttle valve, but also ejected from the exhaust pipe. Over time, the exhaust pipe wall will gradually turn black.

With the accumulation of black particles in the exhaust pipe and the big foot throttle when overtaking in daily life, these unstable black emissions will be blown out of the exhaust pipe, and some of them will be firmly attached to the bumper at the rear of the car, which is disgusting. To this end, many manufacturers decided to change the direction of the exhaust port from backward to downward. But problems also follow. When the exhaust pipe blows downward instead, the originally backward exhaust port really becomes an empty "mouth". At this time, if the exhaust port on the back lip of the car is removed, it will be very uncoordinated, which has also led to the "false exhaust" of major manufacturers in recent years.

In addition, another advantage of using "fake exhaust" is that it can leave more design space for designers, so that they can freely design the tail shape of the vehicle.

To put it bluntly, the fundamental reason for the popularity of "fake exhaust" is policy. Due to stricter fuel consumption and emission regulations, direct injection engines naturally enter the homes of ordinary people, but it also inevitably leads to the blackening of exhaust pipes.

When Volkswagen introduced direct injection technology in China, many people laughed at its exhaust pipe as black as carbon. However, who would have thought that this picture of the exhaust pipe as black as carbon has long been commonplace after ten years.

So don't take too many negative attitudes towards false exhaust. In China, even top sports cars like Bugatti Kay Long Xing use fake exhaust pipes.