A silencer is a tool used to cut down on the noise produced by an internal combustion engine's exhaust. The purpose of the silencer, which is an acoustic soundproofing device, is to quiet the engine's sound pressure and lessen its volume. Mufflers are designed to reduce the high-intensity pressure pulse that an internal combustion engine's combustion process produces. The current study explains the different exhaust sounds, vibrations, and their respective contributions. Through energy flow, frequency, vibration, and noise method are explored. Therefore, it is essential to examine the vibration response and modes in order to understand how a silencer behaves. The muffler is modelled using CATIA V5, and the Altair pre-processing tool is used to do FEM for the muffler. ANSYS R15.0 is used for the analysis, and it finds the frequencies and mode shapes. Using an FFT analyzer, the outcomes of the CAE simulation are compared to those of the experiment. The frequencies and mode shapes are determined for both the modified and unmodified cases, and the outcomes are contrasted.