Valvetronic No Manifold operation

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  1. Valvetronic No Manifold operation 
    #1
    BMW Fanatic
    Car Details
    N42B18's Car Details
    Model of Car:
    316ti SE
    Year of Manufacture:
    2001
    Transmission Type:
    Manual Transmission
    Car Body Type:
    Compact

    Join Date
    Nov 2011
    Location
    N,Ireland, Craigavon
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    SO i disconnected my throttlebody form my valvetronic N42 engine today and the engine started popping and banging, though it was rather stable'ish,

    The video shows an N73 valvetronic engine running with out a throttle or manifold,

    Can anyone provide an explanation of why the engine needs the throttle body other than for fail safe purposes?

    Is there any potential damage to the engine that can be caused here?

    All opinions and Ideas are welcome,

    This is a grey area,

    Cheers
     
     

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  3.  
    #2
    BMW Fanatic
    Car Details
    N42B18's Car Details
    Model of Car:
    316ti SE
    Year of Manufacture:
    2001
    Transmission Type:
    Manual Transmission
    Car Body Type:
    Compact

    Join Date
    Nov 2011
    Location
    N,Ireland, Craigavon
    Posts
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    Thanks
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    Thanked 2 Times in 2 Posts
    Anyone?
     
     

  4.  
    #3
    Super Moderator
    Car Details
    dailydoggy's Car Details
    Model of Car:
    330i
    Year of Manufacture:
    2001
    Transmission Type:
    manual
    Car Body Type:
    saloon
    dailydoggy's Avatar
    Join Date
    Sep 2009
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    UK
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    it uses the throttle for initial start up and tickover anything above idle it converts to VVT and the throttle body goes tot he wide open position, its also the fail,safe if the VVT fails...it reverts to the conventional throttle body setup (limp mode)...
    330i sport a big chunk of berlin...

     
     

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