What are mufflers on a car and why do I need them?

What are mufflers on a car and why do I need them?
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1 Answer

Answer :

With no mufflers you will gain horsepower but lose torque. Backpressure needs to be created for lower rpm driving. No mufflers will cause the car to be hard to drive in lower rpms causing you to have to drive higher in the rpm causing worse gas mileage. I put a high flow cat and less restrictive muffler and removed the resonator on my car and lost 3lbs torque and gained 18hp to the wheels.
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