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Thread: Urgent: Need diameter (around) of stock muffler

  1. #1
    Join Date
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    Default Urgent: Need diameter (around) of stock muffler

    I bought a new muffler and it sounded smaller than it is... it's 7" diameter but its a perfect round muffler. I eyed it up but it was raining so I said f- it. I did however slip it over my tailpipe sticking out that i have now and it was DRAMATICALLY quieter. I am really looking forward to having a normal sounding car.


  2. #2
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    Orlando, FL (Gainesville)
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    wouldnt "around" be the circumference not the diameter, which one do you need?

  3. #3
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    Do you have a catalytic converter on the turbo?

  4. #4
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    Quote Originally Posted by GoldenOne
    wouldnt "around" be the circumference not the diameter, which one do you need?

    Give me anything. I would say around except the stock muffler isnt round its an irregular shape.



    No catalytic converter.

  5. #5
    TC535i Guest

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    Quote Originally Posted by GoldenOne
    wouldnt "around" be the circumference not the diameter, which one do you need?
    Considering he can calculate one from the other... either will be fine.

  6. #6
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    Quote Originally Posted by Jon K
    Give me anything. I would say around except the stock muffler isnt round its an irregular shape.



    No catalytic converter.
    I take it that you're not worried about emissions inspections...? Or does PA not care?

    Or most likely you know someone... NJ is the worst when it comes to inspections... they'll fail you for moisture in a headlamp!

  7. #7
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    tampa fl
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    it should clear with no problem

  8. #8
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    Hockinson, Washington
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    Quote Originally Posted by Jon K
    I bought a new muffler and it sounded smaller than it is... it's 7" diameter but its a perfect round muffler. I eyed it up but it was raining so I said f- it. I did however slip it over my tailpipe sticking out that i have now and it was DRAMATICALLY quieter. I am really looking forward to having a normal sounding car.

    [IMG]http://blowneuroz.com/mygallery/E34%20525i%20Turbo%20Build/magnaflow.jpg[/IM]
    Its roughly 32'' around and 10'' on each side. This is on the part after the bend (toward the rear of the car).
    Lowered with blue h&r(?) springs, Bilsteins, tint, 19# design 3 injectors, Dual Magnaflow
    southwest WA

  9. #9
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    I am going to get a sound clip of the before and after.

    I showed my girlfriend tonight how much more comfortable the new muffler will make the car and she said, "Oh my god it sounds like a normal car!"

  10. #10
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    Quote Originally Posted by Jon K
    I am going to get a sound clip of the before and after.

    I showed my girlfriend tonight how much more comfortable the new muffler will make the car and she said, "Oh my god it sounds like a normal car!"
    Did my info help you out? Im planning on a magnaflow as well, but right now i just turn the music louder...
    Lowered with blue h&r(?) springs, Bilsteins, tint, 19# design 3 injectors, Dual Magnaflow
    southwest WA

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