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Thread: Would like some insight on scaling for ID2000's on E38

  1. #1
    Senior Tuner IDRIVEAG8GT's Avatar
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    Would like some insight on scaling for ID2000's on E38

    So, basically I have a question regarding scaling this E38. Right now it's set up on a custom 2.5bar OS, and has already been scaled by 50% to make ID1000's fit. Now, well that no longer works.

    The stoich trick does not work well at all on this setup because airflow data reporting gets thrown way off, so I'm having to do everything manually which is no big deal, but understanding what I need to scale by is the hard part to me.

    Using the ID data, I can get a 75% scale to work on the IFR side of things as this 212lb/hr injector becomes ~60 lb/hr @58psi. Does that mean that everything that has already been scaled by 50% needs to be rescaled by another 50%? Or does it only need to go 25% further? (Anotherwords do I multiply the airflow referenced tables by 1.50 or 1.25 to get them to match?) Hopefully you guys can open my eyes on this.

    Thanks.
    -Robbie.
    Last edited by IDRIVEAG8GT; 05-04-2013 at 03:00 AM.
    Gray Ghost- The abomination. 2007 Chevrolet Silverado CCSB. 98mm turbo, nitrous, 428LSX, Rossler 80E with a brake. Finally finished. 23 psi, no numbers, Slow as hell.

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  2. #2
    Senior Tuner SultanHassanMasTuning's Avatar
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    whats your IFR limit in your PCM? 127lb/h?

  3. #3
    Senior Tuner IDRIVEAG8GT's Avatar
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    Negative. 63.5 lb/hr
    Gray Ghost- The abomination. 2007 Chevrolet Silverado CCSB. 98mm turbo, nitrous, 428LSX, Rossler 80E with a brake. Finally finished. 23 psi, no numbers, Slow as hell.

    PBM G8- Aluminum 364, twin Precision 67/66 turbos, 6L90 trans swap, CTS-V/Vaporworx fuel system, slowly making progress.

    Dads 2011 CTS-V- Stock bottom end, stock heads, LS9 cam, pullies, ported blower, ported TB, D3 goodies, and lots of nitrous.
    618/618 motor
    906/862 spray

    Caterpillar 50 Forklift- Duramax swap

  4. #4
    Senior Tuner SultanHassanMasTuning's Avatar
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    ouch!

    did you try the regular scaling of 1000cc and cut your VE by 50%

  5. #5
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    I'm in this same spot

    After swapping my 57mm Turbos with 76's, I need to get rid of those 1000's cc and get 2000's cc. I didn't do it yet but it's good to see what I will have to do later, however with an E40...

    Hmmm, or a Pro EFI????

  6. #6
    Senior Tuner DSteck's Avatar
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    It's easy if you have a manual transmission and don't have to worry about torque reporting.

    http://www.injectordynamics.com/SteckScaleArticle.html

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  7. #7
    Senior Tuner IDRIVEAG8GT's Avatar
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    I guess my question wasn't all so clear.

    Do I need to multiply my already scaled tables by 50%, or 25% in order to get the correct amount of scale which will equal a 75% scaled down tune?

    Or as per Stecks logic, a 25% scale.
    Last edited by IDRIVEAG8GT; 05-04-2013 at 09:37 AM.

  8. #8
    Senior Tuner DSteck's Avatar
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    Multiply it all by 0.5.

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  9. #9
    Senior Tuner IDRIVEAG8GT's Avatar
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    Thanks.