The 2.50-inch or 3.0-inch free flowing straight core is wrapped in stainless steel mesh. Some circular welded mufflers also have dual outlets, but this is different from large cars. Large vehicles often have two pipes or one thick pipe leading to two small silencing packages, and then to dual exhaust tailpipes. Moreover, small displacement cars have a single tube and are relatively thin. They are connected to a large silencing package and then divided into two tailpipes for more decorative purposes. Of course, there are also special features, such as the single-sided single-sided of the old Mitsubishi EVO, the single-sided single-sided of the old Subaru STI, the single-sided single-sided of the old GTR, and the single-sided single-sided single-sided of the middle of the Megana RS. However, their tail pipes are thick enough and the muffler package is relatively small, so it will not affect the flow of exhaust gas, after all, their main function is performance.
