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First time on the Dyno. ????

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Old Jun 13, 2005 | 05:10 AM
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Default First time on the Dyno. ????

Did two dyno pulls on Saturday. First run was 235 rwhp and 235 rwtq. Second run was 233 rwhp and 242 rwtq. I did not expect the torque to be equal or higher than the horsepower. It was on a Dynojet, the temp. was 91 and the humidity was 40%. Any thoughts from the experts?
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Old Jun 13, 2005 | 08:19 AM
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something aint right. No way your torque is that much higher then your HP on this car.

Sure you are reading the graph right?
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Old Jun 13, 2005 | 08:38 AM
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Originally Posted by flynnibus
Sure you are reading the graph right?
It said: Max Hp 233 Max TQ 242. I didnt think it was right either and the guys operating the dyno said it was right.
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Old Jun 13, 2005 | 09:35 AM
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Did you do the pulls in 5'th gear? Maybe something to do with the Final Drive?

Can you post the the dyno graphs?
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Old Jun 13, 2005 | 12:06 PM
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They did the pulls in fourth since I have a 5AT. I only have a copy of the graphs and dont have a scanner so Ill have to figure out something to get them posted.
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Old Jun 13, 2005 | 03:39 PM
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Seems about right considering it's a 5AT. Maybe a little low.
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Old Jun 16, 2005 | 12:34 AM
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The HP number is a derivative of torque and RPM. On some cars if the RPM pickup isn't calibrated correctly you will have varied torque readings. It's also possible that the dyno was shut down before you hit your peak HP, although that seems unlikely based on your numbers.

Any reason you're dynoing, or just to see?

Cheers,

Gary
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Old Jun 16, 2005 | 12:44 AM
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automatic cars typically show a spike of power/torque at the begining of each gear from the shift... take a look at the graph and see if the peak torque number you seeing is actually during that spike, and then look at where the torque line really is going and see if its really that high... on automatic cars the peak numbers displayed are usually wrong and just a blip of the shift recorded... if there is no spike seen then disregard what i said and that means the dyno operator it record after it was done shifting.
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Old Jun 16, 2005 | 01:27 AM
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have the dyno shop email you the file of your pulls. download a reader from dyno maker's website.
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Old Jun 16, 2005 | 04:45 AM
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Originally Posted by Gruppe-S
Any reason you're dynoing, or just to see?

Cheers,

Gary
Gruppe-S
Just for fun and to have a baseline for future mods. They were having a dyno day so it was cheaper than usual to have it done.
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Old Jun 22, 2005 | 12:26 PM
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Originally Posted by BluZee
Just for fun and to have a baseline for future mods. They were having a dyno day so it was cheaper than usual to have it done.
Hooray!
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