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The glasspack is an old, simple, and relatively inexpensive muffler design that has less back pressure than other types of muffler, but is less effective at muffling noise. A longer glasspack will reduce noise to a greater extent than a shorter one, as sound is dissipated into the fiberglass damping material.
A sound attenuator, or duct silencer, sound trap, or muffler, is a noise control acoustical treatment of Heating Ventilating and Air-Conditioning (HVAC) ductwork designed to reduce transmission of noise through the ductwork, either from equipment into occupied spaces in a building, or between occupied spaces. [1] [2]
Cat-back exhaust systems generally use pipes of larger diameters than the stock system. To reduce backpressure, the mufflers included in these kits are often glasspacks . If the system is engineered more for show than functionality, it may be tuned to enhance the lower sounds from high-RPM low- displacement engines.
Avoiding ultraprocessed foods and eating more fruits and vegetables such as a fresh salad is one way to combat the risk of developing diabetes. - miodrag ignjatovic/E+/Getty Images
In some U.S. states, more than 40% of residents report having to cut back on basic necessities to afford their electricity bill, survey finds.
Women in their 60s and 70s say this $27 eye cream 'works wonders'
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