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Thread: EFI VS Stage II

  1. #21
    President, DeLorean Industries
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    Quote Originally Posted by dodint View Post
    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.'
    This is why we provide specs for what we build. Standard on anything forced induction and available per request on EFI and naturally aspirated installs.

  2. #22
    Gess dodint's Avatar
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    Quote Originally Posted by Nicholas R View Post
    Which it is not.
    The constant moving of goal posts is what takes the life out of these discussions. I'm willing to say the '197' number is baseless. The 130 number? That's been the number for over 35 years. You'd have to bring some very convincing data for me to move off of it.

  3. #23
    President, DeLorean Industries
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    The best we produced on an engine dyno with a stock PRV using K jet was 127 with a converter (stock exhaust) 135 with a test pipe.


    This was back during the development years.

    twin_turbo_dyno_testing__78452.1418498509.800.600.jpg
    Last edited by Delorean Industries; 08-16-2019 at 03:12 PM.

  4. #24
    Guy with a DeLorean Mark D's Avatar
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    Quote Originally Posted by Michael View Post
    A guy named SonnyV swears by stage II BHP numbers.

    In before post is deleted
    Mark Dehlinger

  5. #25
    Gess dodint's Avatar
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    Thanks for the numbers, Josh.

    I fully acknowledge that drive train loss might not be scalable in a linear way, either. It's fun playing with the numbers.

    Bottom line is I have 114whp and my car can merge onto the interstate without an issue. Good enough for me.

  6. #26
    Member GCMW Deloreans's Avatar
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    Quote Originally Posted by Delorean Industries View Post
    This is why we provide specs for what we build. Standard on anything forced induction and available per request on EFI and naturally aspirated installs.
    I was curious about the EFI set up, I almost got one.....almost.
    Mike Fiore
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  7. #27
    Daily Driver ssdelorean's Avatar
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    Cool

    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.
    Wow, I would expect more from a car with a "Stage" upgrade attached to it. Not tuned correctly?

    Quote Originally Posted by dodint View Post
    The constant moving of goal posts is what takes the life out of these discussions. I'm willing to say the '197' number is baseless. The 130 number? That's been the number for over 35 years. You'd have to bring some very convincing data for me to move off of it.
    Quote Originally Posted by Delorean Industries View Post
    The best we produced on an engine dyno with a stock PRV using K jet was 127 with a converter (stock exhaust) 135 with a test pipe.


    This was back during the development years.

    twin_turbo_dyno_testing__78452.1418498509.800.600.jpg
    My stock daily driver when it was at 167k miles had 119hp at the wheels when dyno'd. One more HP than Patrick C's and he had the wider DMC Europe stainless exhaust on his car! Yeah, Patrick I'm still bragging bout that extra 1 HP from my stock pos :-)
    Shannon Y
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    2nd angle drive - 48,489 miles (21 years) -- original from donor
    3rd angle drive - 26,572 miles (2 years 3 months) -- DMCH
    4th angle drive - 21,988 miles (1 year 11 months) -- DMCH
    5th angle drive - 7,137 miles (10 months 2 days) -- DMCH
    6th angle drive - OVER 68,971 miles and counting (OVER 7 yr 1 months & counting) -- new Martin Gutkowski unit
    over 213K miles

  8. #28
    Senior Member BladeBronson's Avatar
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    Big thanks to everyone who's actually taken the time to dyno. Is there enough information to fill in a chart similar to:

    Code:
    Config                    HP at crank      HP at wheels
    
    Stock                          ?                 ?
    DMC Stage I (exhaust)          -                 ?
    DMC Stage II                   ?                 ?
    DPI Spec I (exhaust)           -                 ?
    DPI Spec II                    ?                 ?
    Christian Williams, Bay Area
    #3452 from 2000-2005
    #10644 since 2015

  9. #29
    "Former Delorean owning Guru" Spittybug's Avatar
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    Isn't this akin to apples and oranges?
    Stage II is an upgrade to enhance performance on top of the existing K-Jet system, right? It is cams, cylinders, exhaust.... mechanical improvements.
    EFI is reliability of fuel delivery, flexibility of spark delivery and modernization of process control.

    As Mr. Deming if one should attempt to improve a system before ensuring it is under control........................................... .
    Owen
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  10. #30
    Senior Member Josh's Avatar
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    Quote Originally Posted by Spittybug View Post
    Isn't this akin to apples and oranges?
    Stage II is an upgrade to enhance performance on top of the existing K-Jet system, right? It is cams, cylinders, exhaust.... mechanical improvements.
    EFI is reliability of fuel delivery, flexibility of spark delivery and modernization of process control.

    As Mr. Deming if one should attempt to improve a system before ensuring it is under control........................................... .
    A bit late to the party there owen

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