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Thread: What is going on, I got too much backpressure

  1. #1
    Join Date
    Jul 2003
    Location
    Northern California
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    1,435
    My Cars
    E60

    What is going on, I got too much backpressure

    everything was fine until I changed spark plugs to those famous "NGKs" now when I downshift I got popping sound crazy loud ones wtf is that.
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  2. #2
    Join Date
    Mar 2001
    Location
    USA
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    1,628
    My Cars
    '97 M3 & '95 325i
    You mean you don't have enough back pressure. Sounds like u have an aftermarket exhaust...
    "The older the boy, the bigger the toy!"
    <img src=http://pages.sbcglobal.net/dinan3/ar15firing.gif><img src=http://pages.sbcglobal.net/dinan3/offwall.gif><img src=http://pages.sbcglobal.net/dinan3/rocketwhore.gif>
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  3. #3
    Join Date
    Jul 2003
    Location
    Northern California
    Posts
    1,435
    My Cars
    E60
    umm... yep I guess that is what I was trying to say .
    is that normal cause it wasnt that loud before
    O, I got the aa gen 3 exhaust
    does it affect performance or smog related issues in any way
    EUROPROJEKTZ-WORLD.COM
    www.KCollection.org

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