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

Pump numbers are in!!!!

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Old Apr 28, 2010 | 04:30 PM
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Pump numbers are in!!!!

Ok guys I got some pump fuel (92 oct) numbers.....pretty crazy....~860hp/815tq at the crank (look at the graph below for numbers at the wheels)

We will be working on the race file and Ill post those numbers in the next few days.

Todd will still be down to fine tune.

Any ideas on why the HP drops around 6k and then climbs?

Way to go Todd and Alex!!!!!!
 
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Old Apr 28, 2010 | 04:52 PM
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How much boost?
the dip Ive seen on almost all the high HP cars... from what I gather it's the plastic plenum (black ) behind the TB....
Car running a little rich I say... mid 11s???... If you get the target AFRs to 12.0 or .8 lamda you can get another 80 hp... just my opinion...
good work I know you've been waiting a while.. we all have lol
 
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Old Apr 28, 2010 | 05:01 PM
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Originally Posted by MARKSKI@911tuning
How much boost?
the dip Ive seen on almost all the high HP cars... from what I gather it's the plastic plenum (black ) behind the TB....
Car running a little rich I say... mid 11s???... If you get the target AFRs to 12.0 or .8 lamda you can get another 80 hp... just my opinion...
good work I know you've been waiting a while.. we all have lol
Good to know..Ill pass the info over to Alex and Todd.
 
Old Apr 28, 2010 | 05:03 PM
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Originally Posted by MARKSKI@911tuning
How much boost?
the dip Ive seen on almost all the high HP cars... from what I gather it's the plastic plenum (black ) behind the TB....
Car running a little rich I say... mid 11s???... If you get the target AFRs to 12.0 or .8 lamda you can get another 80 hp... just my opinion...
good work I know you've been waiting a while.. we all have lol
Marek is correct, it's the 996 intake runners that causes that. That's the reason peeps install the 997 intake as it is much more efficient and removes that dip.

That is the way EVOMS tunes these cars to run in the low to mid 11's. Mine is running between .75 to a max of .8 at 7K so it is still quite rich.
 
Old Apr 28, 2010 | 05:04 PM
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Looks great Jagg. That is amazing power on pump 92 octane fuel at 1.3 bar of boost . I did not expect that much on that octane. The AFR is right where it is suppose to be. We have tuned hundreds of these engines and an AFR of 12:1 will not make any more power with pump fuel. The AFR was at 12:1 a few files back and I added fuel which increased the power. The power fall off is typical of the stock intake manifold. Part of the reason we change the intake manifold is to eliminate this dip in power which also enables the engine to breathe all the way up to 8000 RPMS. Once we start adding some more boost, this dip will be reduced. Alex has the new race map in his email box
 
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Old Apr 28, 2010 | 05:04 PM
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Originally Posted by BigBadBen
Marek is correct, it's the 996 intake runners that causes that. That's the reason peeps install the 997 intake as it is much more efficient and removes that dip.

That is the way EVOMS tunes these cars to run in the low to mid 11's. Mine is running between .75 to a max of .8 at 7K so it is still quite rich.

What do you guys think of the curve?
 
Old Apr 28, 2010 | 05:21 PM
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Curve looks good.. its climbs up on top... thats want I want to see...
mark
 
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Old Apr 28, 2010 | 05:27 PM
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Originally Posted by Evolution MotorSports
Looks great Jagg. That is amazing power on pump 92 octane fuel at 1.3 bar of boost . I did not expect that much on that octane. The AFR is right where it is suppose to be. We have tuned hundreds of these engines and an AFR of 12:1 will not make any more power with pump fuel. The AFR was at 12:1 a few files back and I added fuel which increased the power. The power fall off is typical of the stock intake manifold. Part of the reason we change the intake manifold is to eliminate this dip in power which also enables the engine to breathe all the way up to 8000 RPMS. Once we start adding some more boost, this dip will be reduced. Alex has the new race map in his email box

Thanks Todd...so what do you think she will make on C16 and 2 bar....1000rwhp? What will be my rpm?

Thanks again for all the hard work!
 

Last edited by jags911tt; Apr 28, 2010 at 05:29 PM.
Old Apr 28, 2010 | 05:29 PM
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Bad *** numbers Jags!!!!
 
Old Apr 28, 2010 | 05:33 PM
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Originally Posted by Powell
Bad *** numbers Jags!!!!

Thanks Chris, cant wait for the c16
 
Old Apr 28, 2010 | 05:35 PM
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Originally Posted by jags911tt
Thanks Chris, cant wait for the c16
It's going to be a BEAST that is for sure!

If I am ever up in Seattle I def. am going to want a ride in that thing!!!

-Chris
 
Old Apr 28, 2010 | 05:38 PM
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Originally Posted by Powell
It's going to be a BEAST that is for sure!

If I am ever up in Seattle I def. am going to want a ride in that thing!!!

-Chris
For sure. I cant wait for you to build your motor
 
Old Apr 28, 2010 | 05:48 PM
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Congrats on some amazing pump numbers!
 
Old Apr 28, 2010 | 05:56 PM
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Originally Posted by jags911tt
Thanks Todd...so what do you think she will make on C16 and 2 bar....1000rwhp? What will be my rpm?

Thanks again for all the hard work!
Jagg, you know that I dont like to predict these things My classic line is "it will make what it makes" That is the best answer that I can give. Wait a few hours and neither of us will have to guess
 
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Old Apr 28, 2010 | 05:58 PM
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Originally Posted by Evolution MotorSports
Jagg, you know that I dont like to predict these things My classic line is "it will make what it makes" That is the best answer that I can give. Wait a few hours and neither of us will have to guess

OOOKKKKAAAYYYYY - just anxious.

pm sent.
 

Last edited by jags911tt; Apr 28, 2010 at 06:00 PM.


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