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First Dyno Ever

This is a discussion on First Dyno Ever within the Dyno Information forums, part of the Racing Forums category; Hey guys, will have my slips up soon but needed to ask a question. my 99' Trans Am A4 posted ...

  1. #1
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    Blue/Green Chameleon
    1999 Firebird

    First Dyno Ever

    Hey guys, will have my slips up soon but needed to ask a question.
    my 99' Trans Am A4 posted 300.70 rwhp, all i have is intake, is this about what i should have? Also, what would that be at the crank just out of curiousity. Thanks guys.

  2. #2
    Member hoss 2000 z-28's Avatar
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    Monterey Maroon Metalic
    2000 Z28

    That looks right to me. A4's typically dyno between 290-300whp in stock form so yours is on the higher end. I would not think an intake would give more than 10whp regardless of manufacturer claims, but that's just me.

    Considering a typical auto drivetrain loss of 20% you could say your Brake Horsepower:
    (300.70WHP * .20 Loss) = 60.14 Lost HP + 300.70WHP = 360.84 Crank HP.
    That's the way I figure it, could be wrong however.

    I found a technical yet readable explanation of HP and TQ in terms of drivetrain loss:
    http://www.superstang.com/horsepower.htm

    Of course nobody on here tosses around Brake Horsepower numbers but there ya go.

  3. #3
    Puerto Rico LS1 Rikki_SeVeN's Avatar
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    Black
    1999 Camaro Z28 A4

    Quote Originally Posted by hoss 2000 z-28 View Post
    That looks right to me. A4's typically dyno between 290-300whp in stock form so yours is on the higher end. I would not think an intake would give more than 10whp regardless of manufacturer claims, but that's just me.

    Considering a typical auto drivetrain loss of 20% you could say your Brake Horsepower:
    (300.70WHP * .20 Loss) = 60.14 Lost HP + 300.70WHP = 360.84 Crank HP.
    That's the way I figure it, could be wrong however.

    I found a technical yet readable explanation of HP and TQ in terms of drivetrain loss:
    http://www.superstang.com/horsepower.htm

    Of course nobody on here tosses around Brake Horsepower numbers but there ya go.
    Nice info... and Nice Dyno #'s to the Original Poster!

    I'm hopping to go back and run similar numbers with similar mods... A4... last time I went with a really bad missfire it did a 275whp... hoping for more now

  4. #4
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    Blue/Green Chameleon
    1999 Firebird

    Quote Originally Posted by hoss 2000 z-28 View Post
    That looks right to me. A4's typically dyno between 290-300whp in stock form so yours is on the higher end. I would not think an intake would give more than 10whp regardless of manufacturer claims, but that's just me.

    Considering a typical auto drivetrain loss of 20% you could say your Brake Horsepower:
    (300.70WHP * .20 Loss) = 60.14 Lost HP + 300.70WHP = 360.84 Crank HP.
    That's the way I figure it, could be wrong however.

    I found a technical yet readable explanation of HP and TQ in terms of drivetrain loss:
    http://www.superstang.com/horsepower.htm

    Of course nobody on here tosses around Brake Horsepower numbers but there ya go.
    awesome info, thanks alot!
    and thanks rikki, yeah im hopin to start doin some real mods pretty soon here so im at a pretty good baseline.

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