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Having a free flow muffler will help improve fuel economy.
In most mufflers on the market the air flow is by having the exhaust air take two 180 degree turns u turns. This restricts the airflow and causes immense back pressure.
Having a straight through airflow muffler will improve mileage which is just like removing a muffler.
By removing a muffler there is reduction in weight and improvement in back pressure.
You may be cited for driving without a muffler, as it is required for noise control and pollution control.
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∙ 14y ago
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