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Thread: Controlling Boost in RD28

  1. #11
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    Faster boost response is one of the benefits of blocking the EGR, the faster the turbo comes up on boost the earlier you start to make decent power.

    Is yours a GQ or GU?

    Tony

  2. #12
    Expert Shaunous's Avatar
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    Quote Originally Posted by YNOT View Post
    Faster boost response is one of the benefits of blocking the EGR, the faster the turbo comes up on boost the earlier you start to make decent power.

    Is yours a GQ or GU?

    Tony
    Hey Tony,

    1998 GU

    Cheers,
    Shaun...

  3. #13
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    Little manual boost controller. I've got a cheap one of eBay and it works perfectly fine. Winding the fuel up I found will turn your boost up though. Had my 15psi over boost valve open yesterday. Which let me know I got oil inside my inlet manifold lol, now splattered on the front of the inlet manifold is oil haha.

  4. #14
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    Quote Originally Posted by gqt View Post
    Little manual boost controller. I've got a cheap one of eBay and it works perfectly fine. Winding the fuel up I found will turn your boost up though. Had my 15psi over boost valve open yesterday. Which let me know I got oil inside my inlet manifold lol, now splattered on the front of the inlet manifold is oil haha.
    Parden my ignorance gqt, but what is an overboost valve?

    Shaun...

  5. #15
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    Quote Originally Posted by Shaunous View Post
    Parden my ignorance gqt, but what is an overboost valve?

    Shaun...
    Shown circled in red in the bottom right corner;



    It's a pressure relief valve to protect the engine from overboosting.

    Tony

  6. #16
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    Quote Originally Posted by YNOT View Post
    Shown circled in red in the bottom right corner;



    It's a pressure relief valve to protect the engine from overboosting.

    Tony
    Is that a 1997 or previous, cause i ain't got one of them

  7. #17
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    No intercooler so it's a GQ (pre 1997).

    Tony

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    Wow that's a clean engine bay, and yeah mine did this.


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    Hi there gqt, just wondering how you wound the fuel up. I have same engine as yours with EGR just about to be blocked. Any info would be good brudda.

  10. #20
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    I've got a 98 gu 2.8td running 20pound not much use winding boost up unless you get a chip as the pump only flows a certain amount of fuel so it doesn't get anymore power until chiped up

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