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Dyno run - Good, Bad or Ugly???
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Thread: Dyno run - Good, Bad or Ugly???

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    Dyno run - Good, Bad or Ugly???

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    Hello forum.

    I'm a newbie to the forum, and a happy new 2013 Gigio Abarth owner. I purchased the Abarth in January, and after reading many posting
    on this site and others, I later purchased a Magneti Marelli Piggyback ECU and Power Petal. I also bought a Eurocompulsion short air intake,
    some Madness HIDs, a Road Race CF rear spoiler, and a few LED lighting upgrades.

    The air intake, MM ECU and PP were all installed at the same time by the dealer. When I got the car back, I was thrilled with the improvement in
    power and responsiveness. After reading numerous postings and seeing tons of Dyno charts, I decided to put the car on a Dyno and see what it was doing.

    The dyno runs were made at Henderson Performance in New Braunfels Texas, last weekend. Runs were in 4th gear, A/C off,
    ECS off, SPORT on, MM setting 2. The dyno was a DYNOJET.

    Two runs were made. The second run was made within just a few minutes of the first, and was lower because of something described as "heat soak".
    I was surprised to see that although the max torque was up from published Fiat specifications (196.6), the wheel HP was only coming in at 162.8 HP.
    The technician who ran the testing said it felt to him like something was holding back the car.

    When I drive the car, I'm still impressed with the performance, but I'm wondering if there is something out of whack?

    Many here on this forum are much more knowledgeable about such things, so I'd certainly appreciate an opinion or two.
    If your vehicle pulled this on a dyno, what would you think?

    Thanks for any assistance.

    Doug
    Austin, Texas
    Attached Images Attached Images

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    Boost Addict Lifetime Member opiateESP's Avatar
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    That's a lot to lose from 2 runs due to heat soak. I lost 5 HP from heat soak after 4 runs. Was there a fan infront?

    That puts you around 185 crank HP and 225 ft/lbs. That's really nothing to be ashamed of. Different dynos read differently depending on calibration of the dyno and a bunch of other varying factors. If you head over to a different dyno, you will likely end up with different numbers. As long as you are using a reputable shop, I wouldn't worry too much and just use this as a base line for your next mods. If you feel something is wrong, bring it to the dealership and get them to double check their work.
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    Quote Originally Posted by opiateESP View Post
    That's a lot to lose from 2 runs due to heat soak. I lost 5 HP from heat soak after 4 runs. Was there a fan infront?

    That puts you around 185 crank HP and 225 ft/lbs. That's really nothing to be ashamed of. Different dynos read differently depending on calibration of the dyno and a bunch of other varying factors. If you head over to a different dyno, you will likely end up with different numbers. As long as you are using a reputable shop, I wouldn't worry too much and just use this as a base line for your next mods. If you feel something is wrong, bring it to the dealership and get them to double check their work.
    What Voodoo Magic are you using to determine the Crank Horsepower/ Torque???
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    Quote Originally Posted by Retroguy View Post
    The dyno runs were made at Henderson Performance in New Braunfels Texas, last weekend. Runs were in 4th gear, A/C off,
    ECS off, SPORT on, MM setting 2. The dyno was a DYNOJET.

    Two runs were made. The second run was made within just a few minutes of the first, and was lower because of something described as "heat soak".
    I was surprised to see that although the max torque was up from published Fiat specifications (196.6), the wheel HP was only coming in at 162.8 HP.
    The technician who ran the testing said it felt to him like something was holding back the car.
    Where's your Air to Fuel Chart???
    2016 Jeep GC SRT392
    Redline Tri Coat
    Black Chrome Vapor Wheels
    Hellcat Brembo Brake Kit
    8 Speed ZF
    --.-/ --- MPH - Bone Stock

    "I thought you had a HEMI. Yeah, I had to have a footprint gas pedal installed. So I stole this pile."

    2013 500 ABARTH
    Nero

    2014 SCCA Solo II Texas Region, 2nd G Street
    2015, 2016, 2017, 2018 SCCA Solo II Texas Region, Champion E Prepared

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    Boost Addict Lifetime Member opiateESP's Avatar
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    Quote Originally Posted by BigDaddySRT View Post
    What Voodoo Magic are you using to determine the Crank Horsepower/ Torque???
    The voodoo non scientific method of adding 15%. It's just an estimate. We all know that.
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    Oh the joys of Dyno charts. The list is endless as to why the two different runs were different. Unfortunately, Dyno's are really only good to get you in the ball park and usually take an assortment of runs to get an idea of what the car is doing. In the end there are a lot of factors that can show such a varied difference in two runs.

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    Quote Originally Posted by BigDaddySRT View Post
    What Voodoo Magic are you using to determine the Crank Horsepower/ Torque???
    I'm not sure what voodoo magic he is using, but... Playing bench dyno on a keyboard is like sticking a finger up a random person's butt and guessing what they ate for lunch. It is ricer math and nothing more.

    The original poster should consider going back to Henderson (who are great people BTW) and dyno the car on setting 1 (40%) and see the dofference. He could also considering disconnecting the MM ECU on the spot and running again. Knowing Corey and the guys at Henderson, I am sure they will work with him to get to see the full affect of his mods.

    Dyno days are always fun. But, don't try to compare your car to others because there are way to many variables. You wrote a great list of mods.

    The weather wasn't exactly great for dyno records last Saturday in New Braunfels, near 80% humidity and around 90 degrees. It was hot as hell at Schlitterbahn.

    Mike

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    Quote Originally Posted by acrcpe45 View Post
    I'm not sure what voodoo magic he is using, but... Playing bench dyno on a keyboard is lik sticking a finger up a butt and guessing what they ate for lunch. It is ricer math and nothing more.

    The original poster should consider going back to Henderson (who are great people BTW) and dyno the car on setting 1 (40%) and see the dofference. He could also considering disconnecting the MM ECU on the spot and running again. Knowing Corey and the guys at Henderson, I am sure they will work with him to get to see the full affect of his mods.

    Dyno days are always fun. But, don't try to compare your car to others because there are way to many variables. You wrote a great list of mods.

    The weather wasn't exactly great for dyno records last Saturday in New Braunfels, near 80% humidity and around 90 degrees. It was hot as hell at Schlitterbahn.

    Mike
    :roll eyes:

    15% is average drive train loss between WHP and Crank. Our drive trains apparently have an average loss of 12% from crank so adding 15% at the wheels is a way to rough estimate the reversal. No, as I said, dyno's are not accurate and a different dyno will yield different results. Read before posting.
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    Quote Originally Posted by opiateESP View Post
    The voodoo non scientific method of adding 15%. It's just an estimate. We all know that.
    Do we? Drivetrain loss can range from 5 to 25% and more in same cases...

    I have never seen official numbers from Chrysler or FPT on what the actual drivetrain loss is on the C510 Performance Five-Speed Transmission.

    Mike

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    Quote Originally Posted by acrcpe45 View Post
    Do we? Drivetrain loss can range from 5 to 25% and more in same cases...

    I have never seen official numbers from Chrysler or FPT on what the actual drivetrain loss is on the C510 Performance Five-Speed Transmission.

    Mike
    Do you need me to bold non scientific?
    Pistons & Petrol: Follow us on YouTube.

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