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Thread: EFI VS Stage II

  1. #11
    LS Swapper Josh's Avatar
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    Quote Originally Posted by Delorean Industries View Post
    Stage II dyno chart below. We tested all available products on the market to bring the actual numbers to the surface. Feel free to calculate your "drive train loss" to reach 197 BHP.

    Attachment 60917
    Nice. The forbidden dyno chart. the 197hp stage 2 number is brainwashing at its finest

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  2. #12
    Motors about after dark Michael's Avatar
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    Quote Originally Posted by Josh View Post
    Nice. The forbidden dyno chart. the 197hp stage 2 number is brainwashing at its finest
    A guy named SonnyV swears by stage II BHP numbers.

  3. #13
    Gess dodint's Avatar
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    I dyno'd my car last year. It peaked at 114hp. 42% drivetrain loss is a ton, but I have zero faith in the transmission to begin with, it shifts like a milk truck so I can't imagine it's terribly efficient.

    The same drivetrain loss on a stock motor would put me at 75hp.

    It's also worth noting that I didn't pay to install the Stage II; it was there when I bought the car. I don't have a frame of reference other than my own car.

  4. #14
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    Quote Originally Posted by dodint View Post
    "a tiny amount of horsepower"

    A 67hp improvement on a 130hp motor is a 51.5% increase. That, on a car that really seems to need it.

    Regardless, this is kind of like asking if one should get new tires or repair a bad glove box latch.
    Yeah, except that 67 horsepower gain claim is complete BS. It's really more like 20, 25 horsepower.
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  5. #15
    Gess dodint's Avatar
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    That would sure boost the efficiency of the drive train.

    Josh (DPI), what were the numbers for a stock 5-speed? That should provide control data for calculating drive train loss. From that it would be pretty easy to calculate what the Stage II motor output is if the drive train loss is relatively constant.

    I don't assert the 197 number is correct. I don't even have a dog in the fight as I'm not looking to purchase anything. But from a mechanical engineering problem standpoint I'm curious.

  6. #16
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  7. #17
    Not a DeLorean Guru
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    Quote Originally Posted by dodint View Post
    I dyno'd my car last year. It peaked at 114hp. 42% drivetrain loss is a ton, but I have zero faith in the transmission to begin with, it shifts like a milk truck so I can't imagine it's terribly efficient.

    The same drivetrain loss on a stock motor would put me at 75hp.

    It's also worth noting that I didn't pay to install the Stage II; it was there when I bought the car. I don't have a frame of reference other than my own car.
    The real drivetrain loss on the UN1 is between 15-20%. It is not the 33% and higher number claimed (without proof) by much of the community. There are a whole bunch of other cars that use the UN1 and its variants and have been shown to not have anywhere near such a preposterous drivetrain loss. See - Lotus Esprit V8.
    -Mike

    My engine twists my frame.

    1981 DeLorean, Carb LS4 swap completed
    1999 Corvette, cam/headers/intake manifold, 400 rwhp
    2005 Elise, stock
    2016 Chevy Cruze

  8. #18
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    Quote Originally Posted by Michael View Post
    A guy named SonnyV swears by stage II BHP numbers.
    Epic old school reference.
    -Mike

    My engine twists my frame.

    1981 DeLorean, Carb LS4 swap completed
    1999 Corvette, cam/headers/intake manifold, 400 rwhp
    2005 Elise, stock
    2016 Chevy Cruze

  9. #19
    Gess dodint's Avatar
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    Post 17 directly contradicts post 16. Nice.

    That's assuming the 130hp number is accurate, anyway. That's a 31.5% loss.

    Oh, so that puts the Stage 2 at 166hp if the 31.5% loss is accepted as true.

    As always it lands right in the middle. Greater than '20 or 25' and well below '197.'
    Last edited by dodint; 08-16-2019 at 12:51 PM.

  10. #20
    LS1 DMC Nicholas R's Avatar
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    Quote Originally Posted by dodint View Post
    Oh, so that puts the Stage 2 at 166hp if the 31.5% loss is accepted as true.
    Which it is not.

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