2002 E39 530d EGR Bypass

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  1. 2002 E39 530d EGR Bypass 
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    Hi all,

    Prior to haveing a remap done on 2002 530d manual I am intending to clean the EGR valve and disconnect it. I think this will help some of the smoking I get on full throttle as well?

    I understood the disconnection was as simple as removing a small black pipe that actuates the valve but I read on this part of the forum various chat about EGR bypass valves.

    Do I need a bypass valve? Or is this the next step for performance after disconnection i.e. extra air flow as the obstruction of the EGR valve is removed.

    Thanks is advance guys,
     
     

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    Although a bypass may sound great, it will damage your turbo in the long run.
     
     

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    Quote Originally Posted by NealP View Post
    Although a bypass may sound great, it will damage your turbo in the long run.

    As above .. take it off give it a good clean it will work as good as new.. Taking it off you may have a light on the dash too .

    Mike
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    Why would removing the EGR valve damage the turbo?

    Jason
     
     

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    Quote Originally Posted by jasonprice07 View Post
    Why would removing the EGR valve damage the turbo?

    Jason
    Something I quoted to someone else in the forum Jason.

    Your turbo will spool up more and so you will need to adjust the wastegate limit, otherwise you risk premature turbo failure. Not good in the long run as you really need to protect your engine from overboost.
     
     

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    I thought the boost system was closed loop?
    Turbo will only make the boost required to meet demand?

    Jason:-)
     
     

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    EGR helps to keep combustion temperatures down thus pre-longing the turbos life, it works in a harsh environment and as it's a variable vane turbo it's even more likely to go wrong.

    And like mentioned if you disconnect it then you WILL get the engine light come on. You will be better getting the EGR turned down or fitting a restrictor if it bothers you that much.
     
     

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    Quote Originally Posted by Ronnie View Post
    EGR helps to keep combustion temperatures down thus pre-longing the turbos life, it works in a harsh environment and as it's a variable vane turbo it's even more likely to go wrong.

    And like mentioned if you disconnect it then you WILL get the engine light come on. You will be better getting the EGR turned down or fitting a restrictor if it bothers you that much.
    Thanks for the info.
    How do you go about turning down the EGR?

    Jason
     
     

  11. E46 330d sport 2001 egr question 
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    Hello please help.

    Does the manifold have to be removed to get the EGR valve off so i can clean it ? also is this a easy job to do. any advice welcome
     
     

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    Quote Originally Posted by jasonprice07 View Post
    Thanks for the info.
    How do you go about turning down the EGR?

    Jason
    EGR can be turned down through the DME(ECU) by the dealers or possibily by a BMW independent with Autologic.

    Otherwise fit a restrictor.
     
     

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