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Does a muffler delete affect gas mileage?

I want to take the muffler off my car (love that engine purr!), but I don’t want it to hurt my gas mileage. Does a muffler delete affect gas mileage?

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Nick Kunze · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
No, a muffler delete does not affect gas mileage. Muffle delete is done by removing the muffler from your car, making it louder while operating.
A muffler is a sound suppressing device. It works to quiet down the intense noise created by your engine during combustion. This is a service to the community, preventing loud noises on the streets.
However, the muffler does not do anything to raise or lower your car’s gas mileage, so a muffler delete has no impact on gas mileage.
However, most people prefer a quiet car, so we don’t recommend a muffler delete for the sake of your neighbors.
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