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Seat lcr boost issue

Discussion in 'Leon Mk1 (2000-2006)' started by davey, Feb 13, 2020.

  1. davey

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    I'm over boosting after fitting a rebuilt turbo 26psi holding at25psi the sound coomming off boost is alot dumping air
    What it was boosting before replacing turbo unsure the was no boost gauge I disconnected n75 valve and got upto 5 psi I hear this means wastgate isn't the culprate could anyone help with this it's driving me crazy also fitted 007 service kit with recon turbo
    Mods are cm tip ram air cone
    Fmic airtech fitted with new turbo
     
    #1 davey, Feb 13, 2020
    Last edited: Feb 13, 2020
  2. davey

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    Anyone?
     
  3. Legojon

    Legojon I only wanted a remap
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    007 service kit... does that mean you have a Forge diverter valve? Have you tried a stock DV to see if that cures it?
     
  4. Alexis27

    Alexis27 Active Member

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    Also try changing the N75
     
  5. davey

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    Yes I have the 007 dv a hard swap now the n249 delegate has been done yes I've done a old n75 swap but to be ideal I'm guessing it needs to be a new unit
     
  6. Gokiwi64

    Gokiwi64 Geriatric Member

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    Is the N75 in round the right way and have you the right version ?

    C: 058 906 283C Older 1.8T
    F: 058 906 283F Newer 1.8T
    J: 058 906 283J 1991 Audi 200Q 5cyl. 3B engine
    H: 058 906 283H 1995-97 Audi A6Q; 92-94 Audi 100Q 5-cyl. AAN engine code
    K: 058 906 283K Dahlback, Euro Part
    The H will have a big spike, then drop back down to normal. So the boost will come in a little sooner/harder. The only problem is that it does this at partial throttle also.
    The J will give you a good boost in PSI over the whole curve, BUT, for many people it doesn't work and they end up surging all over the place.
    The MBC would throw you into limp mode any time you went partial throttle, maybe that's what happened...
     

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