2 5 flow sound muffler

... because the length difference between the two pipelines is equal to half of the wavelength of the sound wave emitted by the car, so that the two waves in the overlapping interference cancel each other and weaken the sound intensity, so that the sound is...

...Sound Deadening Mat Product Description Using mufflers and resonators with advanced sound dampening technology can minimize the noise from the engine's intake and exhaust systems. High-flow catalytic converters and silencers designed for noise reduction can also contribute to a quieter engine operation. Adding sound......