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Yes. I drive a 97 4runner and i put a 40 series flowmaster on it. It sounds good, but its not a v8 sound like everyone wants. it kind of sounds like a weedeater with a straight pipe. idk how to explain it. but it has increased my mileage by like, 2 mpg and it feels faster. partially because of the sound but it obviously accelerates faster too.

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Q: Can a flowmaster muffler improve Toyota 4runner gas mileage?
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A free flow muffler can improve mileage but by not by much. It would take a long time to recoup the cost of a new muffler.


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Does removing a muffler help fuel mileage in a cummons 2005?

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.


What is the flow master super 44?

Although I was not familiar with a Flowmaster Super 44, I have done some research and found out what it is. You will find that a Flowmaster Super 44 is a type of muffler you can purchase for your vehicle. They have a variety to choose from.