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Thread: N75 or wastegate

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  1. #1
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    The tune has never worked with an n75 running, only an mbc which in a way is only a manual boost request. Not ecu based.
    If I can hold 15psi with an mbc I don't have a spongey wg or boost leak .

    I'll try increase the wg as suggested
    '02 GTI (clicky) - REFLEX SILVER - VIEZU race tune. VAR design 2.5inch stainless steel dump pipe with 100cell cat into 2.5" billyboat stainless cat back, Forge TIP, N75, Audi DV, ghetto CAI, FK-AK s coilovers, tunerdone LEDs, Clarion CZ301E sound stage.

  2. #2
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    Quote Originally Posted by leighaus View Post
    The tune has never worked with an n75 running, only an mbc which in a way is only a manual boost request. Not ecu based.
    If I can hold 15psi with an mbc I don't have a spongey wg or boost leak .

    I'll try increase the wg as suggested
    Don't go silly, 2 turns will be plenty.

    Gavin

  3. #3
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    Quote Originally Posted by leighaus View Post
    The tune has never worked with an n75 running, only an mbc which in a way is only a manual boost request. Not ecu based.
    If I can hold 15psi with an mbc I don't have a spongey wg or boost leak .

    I'll try increase the wg as suggested

    Do you even have a tune ?

    You can raise the boost to the turbo limits with a MBC .
    Only issue is as you raise it the ECU throws more fuel in .
    Bug_racer supports the rebellion of the euro revolution

  4. #4
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    Quote Originally Posted by h100vw View Post
    So you effectively shortened the rod, correct? Wound the nut closest to the canister closer first. Then the one on the end to lock it up again.

    There's no way if you did this, there'd be no change. I can't think of an explanation why that would be. it doesn't make sense to me.

    gavin
    yes gav, essentially shortened the rod, which in turn starts to open the exhaust valve.

    Makes no sense to me either.. I might contact the tuner... bit of a pain in the arse tho (long story).

    Quote Originally Posted by Bug_racer View Post
    Do you even have a tune ?

    You can raise the boost to the turbo limits with a MBC .
    Only issue is as you raise it the ECU throws more fuel in .
    yes, Viezu tune. approx 12 months ago (current owner).
    '02 GTI (clicky) - REFLEX SILVER - VIEZU race tune. VAR design 2.5inch stainless steel dump pipe with 100cell cat into 2.5" billyboat stainless cat back, Forge TIP, N75, Audi DV, ghetto CAI, FK-AK s coilovers, tunerdone LEDs, Clarion CZ301E sound stage.

  5. #5
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    Quote Originally Posted by leighaus View Post
    yes gav, essentially shortened the rod, which in turn starts to open the exhaust valve.
    Shortening the rod should not be opening the wastegate, it should be pulling it closed harder. Preventing gas bypass and providing more drive to the hot wheel.

    You should have more thread showing at the end of the rod.

    I am away from home now or I'd take some pictures for you.

    Gavin

  6. #6
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    Yes, more rod showing, nuts moved from drivers to passenger side.
    '02 GTI (clicky) - REFLEX SILVER - VIEZU race tune. VAR design 2.5inch stainless steel dump pipe with 100cell cat into 2.5" billyboat stainless cat back, Forge TIP, N75, Audi DV, ghetto CAI, FK-AK s coilovers, tunerdone LEDs, Clarion CZ301E sound stage.

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