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LaSource
Nürburgring


Joined: 08 Feb 2009
Posts: 472



PostPosted: Sun May 10, 2015 8:16 pm    Post subject: Reply with quote

Richyd wrote:
The 997.2 GT3 seems down on power - any idea what that was about?


That was a surprising. There were no obvious indications why....(non super) unleaded tesco fuel? Dont know

On that point, Alexmac's fettled 996RS posted 418bhp...and apparently had been filled with basic unleaded by mistake!
...proper 99ron vpower could have helped to hit 420bhp!
_________________
997 GT3 RS 3.8 Grey/Red
996 GT3 Mk2 Clubsport Guards Red
KTM XBOW RR Superlight Spec
BMW E39 M5, BMW E46 M3
Land Rover Discovery 4 HSE

Previous:
981 GT4 3.8 Clubsport
2x 997 GT3 RS 4.0 White and White
2x 997 GT3 RS 3.8 RHD and LHD
2x 996 GT3 RS Blue and Red
2x 996 GT3 Mk2 Clubsport and Comfort
 
  
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LaSource
Nürburgring


Joined: 08 Feb 2009
Posts: 472



PostPosted: Sun May 10, 2015 8:33 pm    Post subject: Reply with quote

Senoj wrote:
LaSource wrote:
Senoj wrote:
Im still scratching my head over a 32bhp gain with an x pipe! Both cars on very similar mileages. I think just a slightly stronger engine and then free breathing right at the top end, maybe 10 to 15 out of the pipe? Having said that no manufacturer claims any gains at all for x pipes on 997's that i have seen so maybe you dropped a blue pill in the tank Very Happy

Mr La Source, my butt dyno gives a slighty exaggerated flat spot when the X pipe was on the car around the 7k mark, are you seeing that on the chart for the grey car?


There is a bit of a dip of the rate of increase around 7.5k of perhaps 10bhp (though power is still increasing)...plus the torque is tailing off, but does not look all that significant...I guess you have a sensitive but Smile



Are you sure that car hasnt been mapped ? Very Happy the flat spot is sort of there but its not as pronounced as the std car.



The x-axis are on slightly different scale in the two photos stretching out the dip in my graph Devil
_________________
997 GT3 RS 3.8 Grey/Red
996 GT3 Mk2 Clubsport Guards Red
KTM XBOW RR Superlight Spec
BMW E39 M5, BMW E46 M3
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Previous:
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Senoj
Zolder


Joined: 23 Jan 2006
Posts: 5184
Location: Sussex


PostPosted: Sun May 10, 2015 8:58 pm    Post subject: Reply with quote

LaSource wrote:


The x-axis are on slightly different scale in the two photos stretching out the dip in my graph Devil


Is that what your tuner told you to say Floor
 
  
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LaSource
Nürburgring


Joined: 08 Feb 2009
Posts: 472



PostPosted: Sun May 10, 2015 9:16 pm    Post subject: Reply with quote

kingston wrote:
Dont forget someone lost hp with a bypass.

What was interesting to note, exc the 96 rs, that after mine, you was looking at £1k per hp, ie mine to stuarts was 6k, but mine ti a 997.1 was 20hp roughly and itd cost the equivalent. To swap into (unless 7.1s are cheaper/close to 96 prices)


Yes, personally I was expecting a drop with the bypass. Which seemed to be the case with one of the 997.1 GT3s...though that could have some other reason too.

I see your point that from a hp per £ perspective the 996.2 and 997.1 are probably the most efficient cars Smile

...but pricing is another subject not related to actual performance. i.e. a 996.1 may have the least power, but could possibly end up being one of the more sought after.
_________________
997 GT3 RS 3.8 Grey/Red
996 GT3 Mk2 Clubsport Guards Red
KTM XBOW RR Superlight Spec
BMW E39 M5, BMW E46 M3
Land Rover Discovery 4 HSE

Previous:
981 GT4 3.8 Clubsport
2x 997 GT3 RS 4.0 White and White
2x 997 GT3 RS 3.8 RHD and LHD
2x 996 GT3 RS Blue and Red
2x 996 GT3 Mk2 Clubsport and Comfort

Last edited by LaSource on Sun May 10, 2015 9:17 pm; edited 1 time in total
 
  
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LaSource
Nürburgring


Joined: 08 Feb 2009
Posts: 472



PostPosted: Sun May 10, 2015 9:17 pm    Post subject: Reply with quote

Senoj wrote:
LaSource wrote:


The x-axis are on slightly different scale in the two photos stretching out the dip in my graph Devil


Is that what your tuner told you to say Floor


...this is not the graph you are looking for...
Move along now...

Star Wars






always wanted to use that emoticon Smile
_________________
997 GT3 RS 3.8 Grey/Red
996 GT3 Mk2 Clubsport Guards Red
KTM XBOW RR Superlight Spec
BMW E39 M5, BMW E46 M3
Land Rover Discovery 4 HSE

Previous:
981 GT4 3.8 Clubsport
2x 997 GT3 RS 4.0 White and White
2x 997 GT3 RS 3.8 RHD and LHD
2x 996 GT3 RS Blue and Red
2x 996 GT3 Mk2 Clubsport and Comfort
 
  
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Stroller
Spa-Francorchamps


Joined: 20 Mar 2007
Posts: 342
Location: Kent


PostPosted: Sun May 10, 2015 9:47 pm    Post subject: Reply with quote

Gutted, I was going to pop along to spectate on this, but completely forgot it was this weekend....

Would have been the perfect opportunity to talk everything GT3 in a relaxed environment.

Hope you all had a brilliant day.
 
  
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Senoj
Zolder


Joined: 23 Jan 2006
Posts: 5184
Location: Sussex


PostPosted: Sun May 10, 2015 10:09 pm    Post subject: Reply with quote

LaSource wrote:
Senoj wrote:
LaSource wrote:


The x-axis are on slightly different scale in the two photos stretching out the dip in my graph Devil


Is that what your tuner told you to say Floor


...this is not the graph you are looking for...
Move along now...

Star Wars


always wanted to use that emoticon Smile


Sadly not.

Fancy a RHD Car?
 
  
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nicholas lawrence
Barcelona


Joined: 10 Apr 2014
Posts: 1319
Location: United Kingdom


PostPosted: Mon May 11, 2015 7:43 am    Post subject: Reply with quote

Stuart wrote:
Guess I'll be the first:

996.2 GT3
M&M exhaust
EVOMsIT map



Thumb



Beautiful torque curve. Nice and flat along the RPM range - what is standard torque figure in that engine buddy?
 
  
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nicholas lawrence
Barcelona


Joined: 10 Apr 2014
Posts: 1319
Location: United Kingdom


PostPosted: Mon May 11, 2015 7:51 am    Post subject: Reply with quote

that print of 485hp has affected my soul....




'breathes deeply'
 
  
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Richyd
Watkins Glen


Joined: 04 Feb 2011
Posts: 2219
Location: Sunny Tunny Wells


PostPosted: Mon May 11, 2015 10:17 am    Post subject: Reply with quote

I'm going to see if I can get down there for a power run in the next few weeks. I'd like a comparison with you guys
_________________
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ex - 2018 991.2 GTS
ex - 2016 GT4
ex - 2015 Macan S
ex - 2009 997.2 GT3 CS
ex - 2006 997.1 GT3
ex - 1997 993 Carrera 4
ex - 2006 987 Boxster S
 
  
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Stuart
General
General


Joined: 16 Sep 2007
Posts: 5080
Location: Waterworld

2004 Porsche 996 GT3 Mk2

PostPosted: Mon May 11, 2015 10:30 am    Post subject: Reply with quote

Nicholas Lawrence wrote:

what is standard torque figure in that engine buddy?


Quick google shows 284lb-ft@5000rpm & 375bhp@7400rpm
 
  
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nicholas lawrence
Barcelona


Joined: 10 Apr 2014
Posts: 1319
Location: United Kingdom


PostPosted: Mon May 11, 2015 12:01 pm    Post subject: Reply with quote

Stuart wrote:
Nicholas Lawrence wrote:

what is standard torque figure in that engine buddy?


Quick google shows 284lb-ft@5000rpm & 375bhp@7400rpm



That is sex. I can't breathe
 
  
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kingston
Österreich


Joined: 09 Jun 2010
Posts: 998



PostPosted: Mon May 11, 2015 3:58 pm    Post subject: Reply with quote

Stuart wrote:
Guess I'll be the first:

996.2 GT3
M&M exhaust
EVOMsIT map



Heres mine
996.2 GT3 (will need to google what my exhaust is based upon but it cost around abouts £500)



_________________
I really must learn to spell check and proof read my posts Smile
 
  
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nicholas lawrence
Barcelona


Joined: 10 Apr 2014
Posts: 1319
Location: United Kingdom


PostPosted: Tue May 12, 2015 8:02 am    Post subject: Reply with quote

Stuart I'm gonna have to be passenger in your car one day. Please.




And I wont talk please
 
  
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LaSource
Nürburgring


Joined: 08 Feb 2009
Posts: 472



PostPosted: Wed May 13, 2015 6:18 am    Post subject: Reply with quote

Richyd wrote:
I'm going to see if I can get down there for a power run in the next few weeks. I'd like a comparison with you guys


If you do, please let us know how you got on.
_________________
997 GT3 RS 3.8 Grey/Red
996 GT3 Mk2 Clubsport Guards Red
KTM XBOW RR Superlight Spec
BMW E39 M5, BMW E46 M3
Land Rover Discovery 4 HSE

Previous:
981 GT4 3.8 Clubsport
2x 997 GT3 RS 4.0 White and White
2x 997 GT3 RS 3.8 RHD and LHD
2x 996 GT3 RS Blue and Red
2x 996 GT3 Mk2 Clubsport and Comfort
 
  
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Rallyeman
Indianapolis


Joined: 08 Feb 2009
Posts: 2419
Location: WEST WICKHAM KENT


PostPosted: Thu May 14, 2015 8:46 am    Post subject: Reply with quote

What happened to the appearance of Total 911?
_________________
993 C2 Tip, Sold, Never ever forgotten
New Life
GT3.6.2, what an engine, but damn ugly. Sold
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986 Boxster 2.5 (Wife's whip)

Last edited by Rallyeman on Thu May 14, 2015 9:19 am; edited 1 time in total
 
  
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freddie44
Albert Park


Joined: 20 Aug 2009
Posts: 1686
Location: Chelsea

2007 Porsche 997 GT3

PostPosted: Thu May 14, 2015 8:56 am    Post subject: Reply with quote

Is there a final "shoot out" chart comparing supposed factory BHP with actual BHP on the day?

Wow Thumb


_________________
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1967 Alfa Romeo "duetto" Spyder
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nicholas lawrence
Barcelona


Joined: 10 Apr 2014
Posts: 1319
Location: United Kingdom


PostPosted: Thu May 14, 2015 9:00 am    Post subject: Reply with quote

Some are tuned so the comparisons will be out.

Do they have fans underneath the engine (under the rollers) specifically for Porsche engines?
 
  
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harveyn
Trainee


Joined: 23 Jan 2007
Posts: 93
Location: london


PostPosted: Thu May 21, 2015 11:57 am    Post subject: Reply with quote

My 997.2 GT3 was slightly down on power. I normally use Shell V Power, but had BP super unleaded in there on the day. Not sure if that explains it.
 
  
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nicholas lawrence
Barcelona


Joined: 10 Apr 2014
Posts: 1319
Location: United Kingdom


PostPosted: Thu May 21, 2015 12:39 pm    Post subject: Reply with quote

BP is not good enough for Porsche engine imo.


97 Ron feels awful - if you get stuck and HAVE to use lower octane I recommend trying EXOCET OCTIMAX or if you like strong 'shhhh' get a bottle of the EXOCET RUSH 101



They are the guys (scientists) who sell to Shell/BP/Tesco etc anyway - its the same stuff, and you can turn 95ron into 97ron, or 99ron, or maximum 101-102ron with the RUSH additive.


I've just bought a load more bottles but check em out online, I'm not distributing them officially yet, but its a good emergency back up!


http://exocet-racing.co.uk/products/octimax.html

http://exocet-racing.co.uk/products/rush101.html




^ its some serious stuff I kid you not.
 
  
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