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Dyno (thread continued from old board)

Discussion in 'Ferrari Discussion (not model specific)' started by Doody, Nov 1, 2003.

  1. Doody

    Doody F1 Veteran

    Nov 16, 2001
    6,099
    MA USA
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    Mr. Doody
  2. Doody

    Doody F1 Veteran

    Nov 16, 2001
    6,099
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    Mr. Doody
    http://www.ferrarichat.com/discus/messages/21/342669.html?1067657525

    testing url parsing.

    doody.
     
  3. bobafett

    bobafett F1 Veteran

    Sep 28, 2002
    9,193
    Is there an option for URL parsing?

    --Dan
     
  4. Bart

    Bart Formula 3

    Nov 1, 2003
    1,486
    Orange County, Calif
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    Bart
    I can try.

    :rolleyes:
     
  5. Bart

    Bart Formula 3

    Nov 1, 2003
    1,486
    Orange County, Calif
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    Bart
    Trying to post graph

    :rolleyes:
     
  6. Bart

    Bart Formula 3

    Nov 1, 2003
    1,486
    Orange County, Calif
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    Bart
    ANother try for the whole thing

    :rolleyes:
     
  7. allanlambo

    allanlambo F1 Rookie

    Jun 9, 2002
    4,363
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    Allan
    What kind of a car is this dyno graph for?
     
  8. bobafett

    bobafett F1 Veteran

    Sep 28, 2002
    9,193
    I think it's for a 550.

    --Dan
     
  9. damcgee

    damcgee Formula 3

    Feb 23, 2003
    1,864
    Mobile, AL
    What is different. I see the 2% increase in power in upper ranges -- I mean is the exhaust different? Computer? etc?
     
  10. Doody

    Doody F1 Veteran

    Nov 16, 2001
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    guys - this is bart's 550 maranello. it's just two runs on the dyno. i don't believe there were any changes between the runs. i believe bart's car is bone stock except maybe an exhaust mod, but maybe not.

    i was interested to see RWHP. about a 10% loss off of FSpA's engine numbers.

    doody.
     
  11. allanlambo

    allanlambo F1 Rookie

    Jun 9, 2002
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    The hp seems high to be a stock 550. I saw one barely turn 390rwhp, and it was nice good running car.
     
  12. GaryReed

    GaryReed F1 Rookie

    Feb 9, 2002
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    Gary
    Those figures seem really high. We had a club dyno day and a 1997 Euro 550 recorded 409 horsepower on the rollers.
     
  13. GaryReed

    GaryReed F1 Rookie

    Feb 9, 2002
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    Those figure seem high for a 550. We had a 1997 Euro 550 at our club's dyno day and it recorded 409 horse at the tires.
     
  14. allanlambo

    allanlambo F1 Rookie

    Jun 9, 2002
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    That sounds spot on for a euro car. No way thats a stock 550, either that or the dyno is calibrated incorrectly.
     
  15. Attitude928

    Attitude928 Formula Junior

    Nov 1, 2003
    934
    NYC
    Is that SAE net or gross?
     
  16. bobafett

    bobafett F1 Veteran

    Sep 28, 2002
    9,193
    I agree, the numbers look high.

    Cold air and big fans?

    --Dan
     
  17. Bart

    Bart Formula 3

    Nov 1, 2003
    1,486
    Orange County, Calif
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    Bart
    Hey, mine is totally stock with 44,000 miles on it. As any engine gets older, it gets looser, therefore more bhp. (I think)
     
  18. stephens

    stephens F1 Rookie
    Lifetime Rossa

    Feb 13, 2004
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    Evosports dyno seems to read almost 10% higher than any other Dynojet I have seen. In talking to someone who does development work with them, he suggested that they have spent alot of time and money on fans etc to try and re-create the cooling/ram air effect of a car travelling at speed. They have been known to remove airfilters/airboxes etc.
    Their dyno figure for a standard W211 E55 is 423rwhp. Most other Dynojets come in at 370-390hp for the same car.
     
  19. Aircon

    Aircon Seven Time F1 World Champ

    Jun 23, 2003
    78,416
    Melbourne, Australia
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    Peter
    I've said it before, and I'll say it again...dynos just give numbers which are useful for comparison to other cars or your own car after mods on the same dyno. few, if any, are calibrated the same. Certainly no two I've ever tried give the same rwhp.
     
  20. stephens

    stephens F1 Rookie
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    Feb 13, 2004
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    I have experienced the contrary on Dyno Dynamics dyno's. The guys who do some work on my car use one dyno, I check all their figures on a friends dyno. There is a nominal difference between the two, maybe this is just luck, but I agree and hesitate to quote absolute dyno numbers, rather comparitive increases.
     
  21. Aircon

    Aircon Seven Time F1 World Champ

    Jun 23, 2003
    78,416
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    Peter
    Yes, that is what i've experienced too, but change the brand of dyno, and see what happens. Or even just go to one on a day when it's out of calibration.
     
  22. ultgar

    ultgar Karting

    Nov 21, 2003
    123
    New Jersey
    Full Name:
    Steve D'Gerolamo
    Well said. Too many people get hung up on the absolute numbers instead of the relative changes to the numbers (up or down) after mods are made to the car. There are too many variables...even strap tie-down tension & tire pressure can affect readings from run to run on roller dyno's as well as the temp/humidy/pressure in the room (for all machines). SD
     

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