2003 E46 320d exhaust wooing noise

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  1. 2003 E46 320d exhaust wooing noise 
    #1
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    stephen mc's Car Details
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    well folks

    im wanting to do something with the style of my exhaust to a twin chrome, but i dont know wether to buy a rear box with twin pipes r just remove the rear silencer and fit a straight pipe with a tail piece of my choice.
    iv heard some 320d's which have this wooing noise, im wondering do i hav to remove just rear silencer r do i have to remove the 2nd cat??
    im looking to do this on the cheap cause im out of work at the moment
    all help appriciated
     
     

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    Can anybody assist the OP ?
    2013, Porsche 911 Carrera 4S, PDK, Sports Exhaust, Chrono, etc, etc

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    tailorbmw's Car Details
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    From reading other posts the cheapest option is to go for the exhaust TIP.

    Just simply cut off you orginal downward facing one and attach the chrome twin pipe.


    BMW 2003 320d Sport
     
     

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    #4
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    Taffy84's Car Details
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    Do u know any one who's done this and for how much?? Just because I don't like the look of the downward pipe :-/
    But hey if I didn't like looks i'd have bought a Hyundai :-)
     
     

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    #5
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    matthew_henson's Car Details
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    Quote Originally Posted by stephen mc View Post
    well folks

    im wanting to do something with the style of my exhaust to a twin chrome, but i dont know wether to buy a rear box with twin pipes r just remove the rear silencer and fit a straight pipe with a tail piece of my choice.
    iv heard some 320d's which have this wooing noise, im wondering do i hav to remove just rear silencer r do i have to remove the 2nd cat??
    im looking to do this on the cheap cause im out of work at the moment
    all help appriciated
    Don't remove the 1st or 2nd cat as you will fail the new MOT standard, however to get the woosh of the turbo on over run, drill a hole in the bottom of the 1st cat, it is so well hidden that it will never be seen by an MOT inspector and won't fill the car with exhaust fumes
     
     

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    #6
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    Quote Originally Posted by Taffy84 View Post
    Do u know any one who's done this and for how much?? Just because I don't like the look of the downward pipe :-/
    But hey if I didn't like looks i'd have bought a Hyundai :-)
    Don't knock em, my wifes Santa Fe (new style) is about the best car we have ever owned!
     
     

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    Quote Originally Posted by matthew_henson View Post
    Don't knock em, my wifes Santa Fe (new style) is about the best car we have ever owned!
    Really ............ reeeeeaaaaalllyyyy

    mmmm maybe I've bought the wrong car then

    I had a i10 as a hire car not long ago, wasnt what you would call a involving drive, more like a lift in a MILK TRAY box.

    ~On a more serious note, will removing the back box do anything to the engine or just make it slightly louder????
     
     

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    #8
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    WeGoTDiZ's Car Details
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    I thought the wooing noise on mine because the exhaust is blowing from the flexi-joint.
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    You can remove the cats on a diesel still even with the new MOT rules because they say that the tester cannot know what type of diesel emissions system the manufacture/model is meant to have, CAT, DPF ect. The smoke test for Diesels is purely the opacity of the exhaust gas and not the composition of chelike petrols.

    On our old E46 320d Touring I simply cut the rear silencer out and welding some pipe in, and you got a WOOooooo when you let up to change gear at lower speeds.
     
     

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    #10
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    Quote Originally Posted by Stal1878 View Post
    You can remove the cats on a diesel still even with the new MOT rules because they say that the tester cannot know what type of diesel emissions system the manufacture/model is meant to have, CAT, DPF ect. The smoke test for Diesels is purely the opacity of the exhaust gas and not the composition of chelike petrols.

    On our old E46 320d Touring I simply cut the rear silencer out and welding some pipe in, and you got a WOOooooo when you let up to change gear at lower speeds.
    It is a fair point but with so many 320d on the road the average MOT tester is going to get and idea of what models should have what pretty quickly. Agreed however on the back box, it just makes a nice noise with out it and is not too loud
     
     

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