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MPG? with no muffler?

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    #1

    MPG? with no muffler?

    So, 1 yr after getting a new muffler, the damn thing fell off Friday. Looks like the pipe they used rusted all the way through.

    Anyhow, will my gas mileage decrease or increase without a muffler?

    It sure is LOUD
    90 accord EX automatic F22A4 232,500
    DIY ram intake
    0gauge/4gauge BIG 3
    stock alt rewound to 120amps
    optima orange top 830cca 1030ca
    fully synthetic valvoline "Max Life" 5w30


    Other rides:
    2004 Jeep Liberty v6
    2001 Honda civic ex coupe 1.7 vtec
    Tags: None
    #2
    It shouldn't matter much either way.

    Some restriction in the exhaust system (such as a muffler) can increase low-end response, so to make your car move as you expect, you may rev higher, or press the gas harder... that's really the only way it'll change anything. All sensors and such that would determine how much fuel the injectors deliver are located well before the muffler.






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      #3
      My exhaust blew off at the flex pipe so it's almost open headers right now. It's super loud, super annoying and super awesome at the same time. I haven't noticed any drop in MPG or power.

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        #4
        Originally posted by 90Haccord View Post
        So, 1 yr after getting a new muffler, the damn thing fell off Friday. Looks like the pipe they used rusted all the way through.

        Anyhow, will my gas mileage decrease or increase without a muffler?

        It sure is LOUD
        i bet it is not only very loud, but also has no throttle response below 3000rpm. get a muffler, you can get one for $30, you aren't going to notice a difference in MPG without a muffler.

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