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Sound. Every exhaust system or muffler has its own unique sound. You can add a Magnaflow muffler to your exhaust for a pleasing, slightly louder-than-stock tone, or you can get an aggressive growl out of a glasspack Cherry Bomb muffler.ufflers. If your exhaust system ended at the catalytic converter, your vehicle would be obnoxiously loud and noisy-far from the high-performance growl you know and love. As their name implies, mufflers reduce the noise coming out of your exhaust to less-than-deafening levels.
Now he relies on an aftermarket exhaust system for better noise. I want to hear the engine, rather than some version of the engine being played to me, he says. VW is not alone. The new BMW M5, which ditched the sonorous V-10 for a twin-turbo V-8, plays an engine soundtrack through the car's audio system.