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

What is the max WHP OEM K24s can attain?

Old Jan 21, 2014 | 10:16 PM
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my 11.9 at 127mph with 2.03 60ft is hardly beating on it, rolling off the clutch...good shifts yes but lazy/easy off the line...leaky OE wastegate, running ~1.2 bar....pulls on my buddy's 549whp(uncorrected Mustang dyno) '11 5.0 S/C Stang...
no disrespect intended, but perhaps you are down on power..??
Will try to put mine on a known dyno, after tune/injectors/wastegates, in the Spring and see where it's at for sake of general knowledge.

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Old Jan 21, 2014 | 10:42 PM
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re-read my post, Mustang=549whp, my GT2=???whp...Mustang weighs about 500lbs more...to pull steadily on Mustang should place GT2 around 500whp..
either way doesn't matter, always is someone faster, and that's ok...
good night!
 
Old Jan 21, 2014 | 10:44 PM
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Originally Posted by 993GT
re-read my post, Mustang=549whp, my GT2=???whp...Mustang weighs about 500lbs more...to pull steadily on Mustang should place GT2 around 500whp..
either way doesn't matter, always is someone faster, and that's ok...
good night!
Wait are you talking about a Mustang GT? Ohh my bad i thought you were saying your porsche sorry about that. lol
 

Last edited by 996tt550hp; Jan 21, 2014 at 10:56 PM.
Old Jan 21, 2014 | 11:38 PM
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Originally Posted by 996tt550hp
Evoms even they said its not possible at 1.0 bar. Johnspeed dynoed his and made 505hp and my car at 1.2 bars made 506whp i understand if its at 1.2 bars but not at 1.0 bar.

530awhp on on stock k24?????? Agh i think anyone will tell you its not possible. You would be beating 18gs.
Seeing is believing,,I would have to see it on an independent dyno....
I don't think 530hp is possible on a 'AWD' dyno from what I have done and saw...IMO..
BUT anything could be possible with adders like race fuel/map + straight pipes + Nitrogen cooled intercoolers+ iced intake,etc.. Oh yes and a happy dyno to be on..Maybe new tuning tricks are out there for stock K24s?
I know when I had my X50 93 octane GIAC tune a while back ago, I was in constant contact with Andrew from GIAC to try to better my 505 rear wheel HP and all the other dyno numbers I got from the other dynos..He said I was right there where I should be back then.. He was a knowledgeable , straight up and gave a lot of good info to me..Great customer service from him..
Just think if you put 18g wheels in what would happen on that 530 AWD K24 car ?..LOL...GIAC didn't have and still doesn't have a 18g tune but I would liked to see that come out and even try there tune then..
 
Old Jan 22, 2014 | 12:41 AM
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Two K24's will flow about 670 hp's worth of air @ 0.8-1.0 bar boost (less if boost is higher, see the compressor map), it's the problem of the rest of the system if that flow can be used.
The optimal boost is around 1.1 bar, max flow being 34.2 lb/min, equalling about 325 hp / turbo. And that's still with 65% efficiency.
650 crankhp -15% loss = 552 hp...

More math: 600 hp / 3550 lbs should equate to 10.5 sec / 129 mph ½ mile.
 

Last edited by pete95zhn; Jan 22, 2014 at 12:44 AM.
Old Jan 22, 2014 | 05:10 AM
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Hey All, I have to say respect to all of this tons of info that a new member to the Porsche community gets just by reading a thread like that.
Unfortunately I had to leave with a broken heart after concluding that there is no way I will be making 500 AWHP with my 996 TT :-( sad for me.

The moods that I have and will start installing as from today are as the following:
4.5" 911 IC, stage 3 clutch master, forged DV, injectors, and a protomotive tune which the car has on right now in addition to a millteck exhaust that on the car no cats.
Should I go RW, I don't and i never drag my cars I Auto-x a lot and I like a happy a happy tail car but I'm not sure how the handling on the street will be.
 
Old Jan 22, 2014 | 06:14 AM
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Originally Posted by pete95zhn
Two K24's will flow about 670 hp's worth of air @ 0.8-1.0 bar boost (less if boost is higher, see the compressor map), it's the problem of the rest of the system if that flow can be used.
The optimal boost is around 1.1 bar, max flow being 34.2 lb/min, equalling about 325 hp / turbo. And that's still with 65% efficiency.
650 crankhp -15% loss = 552 hp...

More math: 600 hp / 3550 lbs should equate to 10.5 sec / 129 mph ½ mile.
Maybe BUT theory and real world sometimes are two different animals due to other factors not taken into consideration..
If that were the case here,, there would be a lot of those numbers over the years and we wouldn't be here.. LOL.
Its good to share info,,,we all learn from it..
 
Old Jan 22, 2014 | 06:31 AM
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Yes, theory and reality...but graphs are good for showing what's outright impossible and what may be achieved if planets are aligned...
 
Old Jan 22, 2014 | 06:36 AM
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Originally Posted by 996tt550hp
Evoms even they said its not possible at 1.0 bar. Johnspeed dynoed his and made 505hp and my car at 1.2 bars made 506whp i understand if its at 1.2 bars but not at 1.0 bar.

530awhp on on stock k24?????? Agh i think anyone will tell you its not possible. You would be beating 18gs.
There is more to the power equation than boost pressure.
 
Old Jan 22, 2014 | 08:00 AM
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Originally Posted by sinKing
There is more to the power equation than boost pressure.
Of course and thats the name of the game but we have GIAC claiming 530awhp lol just like AMS claiming 800hp on 16g billets. LOL
 
Old Jan 22, 2014 | 08:02 AM
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Originally Posted by 996tt550hp
Of course and thats the name of the game but we have GIAC claiming 530awhp lol just like AMS claiming 800hp on 16g billets. LOL
Not even in the same league of comparisons.
 
Old Jan 22, 2014 | 08:03 AM
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Originally Posted by OS Inspector
Not even in the same league of comparisons.
I know but both vendors are crazy lol
 
Old Jan 22, 2014 | 09:09 AM
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Originally Posted by 996tt550hp
I know but both vendors are crazy lol
You seem like the crazy one. You said the most a K24 setup could make would be 440 awhp, and that's with supporting mods and 1.3 bar. Many disagree with you, including GIAC. They said "we can make 500+ awhp on our Mustang dyno" and shared a graph of a car making peak hp of 505 awhp. Then you claim they're saying 530 awhp, when they didn't. Then you say "those would beat 18g" but 18g cars typically make 550-600 whp from what I've seen.

You post a lot but it seems you don't spending enough time and effort reading and comprehending the information people are trying to share with you. My $0.02.
 
Old Jan 22, 2014 | 09:12 AM
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Originally Posted by c32AMG-DTM
You seem like the crazy one. You said the most a K24 setup could make would be 440 awhp, and that's with supporting mods and 1.3 bar. Many disagree with you, including GIAC. They said "we can make 500+ awhp on our Mustang dyno" and shared a graph of a car making peak hp of 505 awhp. Then you claim they're saying 530 awhp, when they didn't. Then you say "those would beat 18g" but 18g cars typically make 550-600 whp from what I've seen.

You post a lot but it seems you don't spending enough time and effort reading and comprehending the information people are trying to share with you. My $0.02.

Completely Agree
 
Old Jan 22, 2014 | 09:30 AM
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Originally Posted by johnspeed
Seeing is believing,,I would have to see it on an independent dyno....
I don't think 530hp is possible on a 'AWD' dyno from what I have done and saw...IMO..
BUT anything could be possible with adders like race fuel/map + straight pipes + Nitrogen cooled intercoolers+ iced intake,etc.. Oh yes and a happy dyno to be on..Maybe new tuning tricks are out there for stock K24s?
I know when I had my X50 93 octane GIAC tune a while back ago, I was in constant contact with Andrew from GIAC to try to better my 505 rear wheel HP and all the other dyno numbers I got from the other dynos..He said I was right there where I should be back then.. He was a knowledgeable , straight up and gave a lot of good info to me..Great customer service from him..
Just think if you put 18g wheels in what would happen on that 530 AWD K24 car ?..LOL...GIAC didn't have and still doesn't have a 18g tune but I would liked to see that come out and even try there tune then..


This is great info johnspeed. Dynos make put people in reality lol.
 

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