T304 stainless steel soft street racing car is designed without Fxcuses back pressure reduction, and the throttle response is faster. Torque, horsepower and speed undoubtedly increase the race certificate according to 50 state laws, and it is imported with limited lifetime warranty. The loud volume of the vehicle muffler is caused by aging damage of the rubber sleeve of the exhaust pipe joint or damage of the structural pad connecting the exhaust pipe, so it should be replaced. Car muffler is a kind of component used to reduce the noise when the car engine is running. Because the length difference between two pipes is equal to half of the wavelength of sound waves emitted by the car, when two rows of sound waves are superimposed, the interference between them cancels each other, weakens the sound intensity, reduces the sound, and thus plays a silencing role.