304 409 Stainless Steel Exhaust System 57.2mm Truck Pipes

Exhaust Flexible Pipe 304 409 Exhaust System for Mercedes Benz

Back pressure exhaust pipe

exhaust pipe
(It is more environmentally friendly as the original factory) The principle is the same as the original factory, but the sound will be better than the original factory. The original car mainly uses this kind of tube. The main reason is that the volume change of the grating muffler in the tube or the tube produces a kind of interference. When returning, the back pressure in the tube will block the exhaust gas from rushing out, allowing the mixture to achieve complete combustion. However, if the back pressure is too strong, the exhaust gas cannot be completely discharged from the cylinder, causing the exhaust gas and the mixture to burn together to reduce the combustion efficiency. Of course, the most direct thing is to induce the horsepower output. Its advantages: low noise, good low-speed torque. Exhaust gas cannot be discharged quickly at high speeds, which affects the power output of the engine and has a low volume.

Half back pressure tube
Of course, the strength of the back pressure of this kind of pipe is reduced, and the smoothness of the exhaust is better than that of the back pressure pipe. Simply put, it has a moderate back pressure between the back pressure pipe and the straight pipe to obtain the advantages of starting torque exhaust. : The shortcomings of good torque performance at mid-to-tail speed: the noise is too loud and the volume is adjustable.

Straight tube
The acceleration will be better than the back pressure tube, but the biggest disadvantage is that it is very noisy. It becomes a "police uncle" to chase you. The back pressure is extremely low, the exhaust is unimpeded, the low twisting force is poor, and the medium to high twisting force overcomes the advantages: Smooth exhaust, strong high torque. Disadvantages: low steering soft power, loud noise (some people say it is easy to burn the valve and don’t know if it is true) the volume is super loud.

Semi-through tube
In fact, the semi-straight-through tube is the same as the semi-back pressure tube, but the exhaust diameter is larger than the half-back pressure tube: the starting torque is lower than the semi-back pressure, but the medium and high pressure torque is greater

Variable exhaust pipe
The exhaust is controlled by the valve to achieve the best sound and performance.