997 Turbo / GT2 2006–2012 Turbo discussion on the 997 model Porsche 911 Twin Turbo.
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997tt tip vs GTR

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Old Apr 25, 2009 | 12:29 PM
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Video 997tt tip vs GTR

heres a vid from a run i had with a GTR. owner is a cool guy. this was a friendly run. i had a feeling he would win but not by this much his car was stock besides having a mid-pipe but i dont think that gives much of a gain, does it?

all i have is a BMC filter. car has 18k miles. perhaps time for a spark plug change? not sure if that would help out much. maybe i have a boost leak? who knows. any feedback would be appreciated.

a 6 speed 997 would definitely give it more of a run then i did, thats for sure.

http://www.youtube.com/watch?v=gxg95nZj4ZQ
 
Old Apr 25, 2009 | 01:13 PM
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Wow, to be honest i really thought the 997tt would be faster. Did you use the over boost?
 
Old Apr 25, 2009 | 01:39 PM
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Originally Posted by Porsche Boy
Wow, to be honest i really thought the 997tt would be faster. Did you use the over boost?
that makes the two of us. yup, i used overboost. all the little gadgets were set properly as well (sport button on, PCM off, etc.).
 
Old Apr 25, 2009 | 01:46 PM
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Nico I think a 6sp would be slower than the tip. From a roll, I never stood a chance... I could feel the double clutch gain on me every up shifts. To be fair, Nissan under claimed the HP ratings for the GTR as well.
 
Old Apr 25, 2009 | 03:12 PM
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from a roll the 6 speed will walk a tip. the tips advantage is nailing the power braked launch from a dead stop.

from higher speed rolls stock 6 speeds have inched away from GTR's with distances increasing as speeds increase over 120 mph. from a dead stop a launched GTR is going to beat a TT based on what Ive seen thus far.

From lower speed rolls the GTR might put a car length on ya - stock for stock - until you get into 4th having wasted lots of time shifting.
 
Old Apr 25, 2009 | 04:37 PM
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It basically looked like two snails racing.
 
Old Apr 25, 2009 | 04:54 PM
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Also remember that even the best shifting 6 speed car will interrupt tractive force during shifts, and the GTR does not. A brake boosted Tip car would probably be the ticket against a GTR.
 
Old Apr 25, 2009 | 04:56 PM
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Are you sure he was only running a mid pipe? The gtr pulled quite a lot for just having a mid pipe.
 
Old Apr 25, 2009 | 07:03 PM
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Originally Posted by Porsche Boy
Are you sure he was only running a mid pipe? The gtr pulled quite a lot for just having a mid pipe.
Thats what he told me. I'm starting to think if it would have been a little different outcome if I just left it on drive and just did the kickdown instead of manually shifting...
 
Old Apr 26, 2009 | 02:21 AM
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Did the GTR have 1 or 2 passengers? Did you take that into account? I know you had a passenger...
 
Old Apr 26, 2009 | 02:35 AM
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both cars had 1 passenger
 
Old Apr 26, 2009 | 03:59 AM
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Originally Posted by Nico
Thats what he told me. I'm starting to think if it would have been a little different outcome if I just left it on drive and just did the kickdown instead of manually shifting...
Honestly speaking, I really doubt the guy just had a mid pipe. Do you know him well? I mean if you just meet someone on the street, I don't really think he is going to tell you everything that he has. I think the ideal run is when you downshift in auto mode to the ideal gear and then floor it. So the car changes at the highest rpm every single time.
 
Old Apr 26, 2009 | 04:02 AM
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Originally Posted by gmoney
from a roll the 6 speed will walk a tip. the tips advantage is nailing the power braked launch from a dead stop.

from higher speed rolls stock 6 speeds have inched away from GTR's with distances increasing as speeds increase over 120 mph. from a dead stop a launched GTR is going to beat a TT based on what Ive seen thus far.

From lower speed rolls the GTR might put a car length on ya - stock for stock - until you get into 4th having wasted lots of time shifting.

++++1 for that.Very true.Again we need a PDK to kill a GTR all the way from head to foot.
 
Old Apr 26, 2009 | 11:13 AM
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Originally Posted by Porsche Boy
Are you sure he was only running a mid pipe? The gtr pulled quite a lot for just having a mid pipe.
I know the GT-R owner, its Greg aka Gripforce on other forums. I was at SP engineering the day he got the mid pipe installed. FYI he has the Cobb AP also which bumps boost from 12psi to 16...stage I. But thats the extent of his mods unless he did more work in the last week.

What was your psi- if it was stable at 1.1 or 1.2 then you dont have a leak. I have a tip 997TT also, we should run since Im local (Orange County) so you can get some perspective. And then we can run in my GT-R.
 
Old Apr 26, 2009 | 11:30 AM
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Originally Posted by turbodickie
It basically looked like two snails racing.
 


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