996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

My Dyno Sheet

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Old May 28, 2009 | 05:02 AM
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My Dyno Sheet

can someone please tell me if the readings on these Dyno sheets are within the claimed HorsePower level that i have (650HP) the only thing i know is that the reading are at the wheels not the crank.
 
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Old May 28, 2009 | 06:06 AM
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I am assuming you had an AWD run. AWD loss is around 18% so your max was 465 * 1.18 is around 548.7 at the crank.

So not quite 650 at the crank.
 
Old May 28, 2009 | 07:38 AM
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you are definitely not at 650 crank. you should have been at about 533 awhp for 650 bhp.

your current crank hp is 567 bhp based on your graph

just looked at the history of your car and noticed you have K16's. So you are about as good as you will get with stocker K16's. Hp is good for K16's if that is what you have.
 

Last edited by Prche951; May 28, 2009 at 07:45 AM.
Old May 28, 2009 | 07:42 AM
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it could be because i was using 95 octane instead of 98, i'll try again with 98 octane.
 
Old May 28, 2009 | 07:45 AM
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it was a mustang Dyno, and yes it was AWD run, but the Dyno guy talked about a difference of 30%.
 
Old May 28, 2009 | 07:54 AM
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i have FVD,s K24/K26 turbo's
 
Old May 28, 2009 | 08:03 AM
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are the HP figures in these sheets relate to wheel HP or Engine HP? and why did the guy tell me there is a lose of 30%? i forgot to mention one important point besides also forgetting to fill up with 98 octane the weather was very hot that day it was around 44c.
 
Old May 28, 2009 | 08:07 AM
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Wow, Those are great numbers....

The graph is alittle odd, I am curious to know what factors the dyno operater entered.

Did you happen to video tape the run?
 
Old May 28, 2009 | 08:12 AM
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A friend was video taping the run but i didn't watch it yet, i'm starting to doubt the results.
 
Old May 28, 2009 | 08:19 AM
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Was there any clutch/tire slippage?
 
Old May 28, 2009 | 08:20 AM
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Originally Posted by jalmood
are the HP figures in these sheets relate to wheel HP or Engine HP? and why did the guy tell me there is a lose of 30%? i forgot to mention one important point besides also forgetting to fill up with 98 octane the weather was very hot that day it was around 44c.


oh, so you got your turbos back? if so, why is the power petering out at 6200 rpm?

30% loss? no way. Unless you are at high altitude. Drivetrain loss is about 18-20% max.

makes no sense, your turbos should pull to 7k. Timing is coming back at the top end, so fueling may help a bit but will not make up the huge difference in power.
 
Old May 28, 2009 | 08:22 AM
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Do you have any other mods like a 5 bar FPR or fuel injectors? How about an ECU tune?
 
Old May 28, 2009 | 08:41 AM
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Originally Posted by Adam@Autoscope
Wow, Those are great numbers....

The graph is alittle odd, I am curious to know what factors the dyno operater entered.

Did you happen to video tape the run?
how do you figure. K24/26's at 465 awhp is good? Not even a Dyno Dynamics.

Torque is not in Ft-lbs by the way, so if you do not see that you would think it is excellent, but it is not.
 
Old May 28, 2009 | 08:43 AM
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Jalmood, it was a hot day and did you have fans on the car, lots of them?
 
Old May 28, 2009 | 08:47 AM
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Originally Posted by Prche951
how do you figure. K24/26's at 465 awhp is good? Not even a Dyno Dynamics.

Torque is not in Ft-lbs by the way, so if you do not see that you would think it is excellent, but it is not.
Wait wait wait, I read it wrong! I apologize... Disregard my statement!

So you your numbers poor?

I mean, how does it drive on the street? Dyno numbers are dyno numbers....

It was HOT? What numbers were you expecting?
 


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