2003 E46 318i m sport coupe back box popping

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Thread: 2003 E46 318i m sport coupe back box popping

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  1. 2003 E46 318i m sport coupe back box popping 
    #1
    BMW Fanatic
    Car Details
    rustybear100's Car Details
    Model of Car:
    318CI M SPORT
    Year of Manufacture:
    2003
    Transmission Type:
    AUTO
    Car Body Type:
    COUPE

    Join Date
    Oct 2010
    Location
    SWANSEA
    Posts
    75
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    54
    Thanked 3 Times in 3 Posts
    Had a pro sport back box fitted today, sounds good not loud so just right .

    When I came home i got out to listen to the idle and noticed the exhaust sounds as if its popping rather than being burbling smoothly. Just wondering if this is the norm or if I better get the car diagnostic checked to see if the fitment has thrown anything out of sync etc.

    The back box is as close to oem i could get with 2.5 slash pipes and made to be as quiet as possible so it gives a nice growl, its the idle noise I am not sure about as I wanted that as smooth as possible.

    Before I go back to the fitters and ask them (who I must say are excellent) I wanted to get some pointers/advice please
    Last edited by mark@vorny.co.uk; 07-01-2011 at 00:46.
     
     

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  3.  
    #2
    BMW Fanatic
    Car Details
    rustybear100's Car Details
    Model of Car:
    318CI M SPORT
    Year of Manufacture:
    2003
    Transmission Type:
    AUTO
    Car Body Type:
    COUPE

    Join Date
    Oct 2010
    Location
    SWANSEA
    Posts
    75
    Thanks
    54
    Thanked 3 Times in 3 Posts
    Could it be that fuel is burning = popping? or maybe a sensor has been disturbed when fitting the back box? Would diagnostics find these problems?
     
     

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