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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.
Relevance. Rating Newest Oldest. Best Answer: If you want it louder, drill or punch a couple of holes in the muffler and then start the car. If you want it louder, make a couple more holes in the muffler and keep repeating the process until you achieve the sound level you like.Just keep in mind that this will likely shorten the lifespan of those mufflers. The other option is to replace the factory mufflers with an aftermarket version.. take out the muffler completely and just have a straight pipe from the cat. 2. buy a glasspack or new muffler. Drilling holes can ruin the entire car and nothing sounds good with holes in the exhaust. So DO NOT listen to these dumb asses that have no experience with any car except their mom's Prius.