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How to Make a Car Exhaust Louder Without Buying Anything The catalytic converter and muffler operate to dampen sounds and control vehicle emissions. Some states require that all vehicles manufactured after a certain date have both. Increasing the noise level of your exhaust on newer vehicles requires purchasing aftermarket exhaust systems. Older vehicles, such as a 1960's era truck, are grandfathered in, allowing for the use of straight piping. You can modify the exhaust on an older vehicle easily without having to buy any expensive parts. Things You'll Need Angle grinder Drill Instructions Cut the exhaust pipe with an angle grinder where the exhaust pipe meets the muffler coming out of the engine. Cut the hangers on the disconnected pipe with the angle grinder and remove the excess pipe. You will see two to three hangers connecting the pipe and the frame extending towards the rear of the vehicle. Cut all of them. Drill three holes near the ti...

What Is the Function of the Exhaust System? An exhaust system carries waste gases and other combustion products away from an automobile engine. It allows the vehicle to operate with minimal noise, smoke and pollution transmitted to the environment. A properly maintained exhaust system is essential to the clean and efficient operation of the car. Function For the internal combustion engine that drives trucks, cars and motorcycles, the exhaust system carries waste gases away from the engine and through a system of manifolds and pipes. The exhaust system is an essential part of a vehicle engine and must be kept in good working order, otherwise engine performance and mileage will suffer. Exhaust Manifold The exhaust manifold is the first component of the exhaust system. It comprises a stainless steel, aluminum or cast-iron unit that adjoins the engine's combustion cylinders and collects exhaust gases from the combustion process. Car enthusiasts have the option of detailin...