CloseAug 22, 2007 1:21:40 PM
Quote:
Rami said:Quote:
Nick_Athens said:
You dont need wires... Checkk it out here...
http://www.performancebox.co.uk/
Ok thx Nick, just ordered one
Quote:
LukasLuis said:
RC,
A standard turbo needs 20.5 secs appx from 0-250 km/h. Not 25 secs, unless there is a problem with it...
It is also MANDATORY to use the external antenna for the Performance Box, using the built-in antenna may not deliver accurate results, even in cars without anti-UV windshields.Quote:
RC said:
Btw: the new 997 GT2 is rumoured to hit 0-300 kph in "slightly" above (worse) Carrera GT performance. This means to me around 33-34 seconds. .
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TB993tt said:Quote:
RC said:
If it is from real Porsche sources then they reckon that the CGT does 0-300kph in ~27s so the GT2 could be under 30s (on their test track) ?
No way. Just consider the follwoing:
- longer gearing than 997TT (top-speed 329kph)
- worse CwxA coefficient (disadvantage at higher speeds)
- just 50hp more than 997TT
My guess is somewhere around 35s.
Quote:
CGT1178 said:
im sure the 997TT after 15,000km with good driver can bring 35 s (0-300)
Quote:
MKSGR said:Quote:
CGT1178 said:
im sure the 997TT after 15,000km with good driver can bring 35 s (0-300)
You seem to be in minority, though
Just think logical: how (physically speaking) should a 35s time be possible if a regular time is 41-43s? You need an additional 70hp or so (on top of the 480hp of the 997TT) to get there. A car with such power would never leave the Porsche factory as the deviation from the claimed hp number would be illegal (!) under German law
Quote:
CGT1178 said:Quote:
MKSGR said:Quote:
CGT1178 said:
im sure the 997TT after 15,000km with good driver can bring 35 s (0-300)
You seem to be in minority, though
Just think logical: how (physically speaking) should a 35s time be possible if a regular time is 41-43s? You need an additional 70hp or so (on top of the 480hp of the 997TT) to get there. A car with such power would never leave the Porsche factory as the deviation from the claimed hp number would be illegal (!) under German law
it`s not important to persude every one .. i tryed the performace box with the stock 997TT 2 times and the number was 35 s and im sure that the performance box is very accurate .. the different will be not more than .1-.2 second
Quote:
MKSGR said:Quote:
TB993tt said:Quote:
RC said:
If it is from real Porsche sources then they reckon that the CGT does 0-300kph in ~27s so the GT2 could be under 30s (on their test track) ?
No way. Just consider the follwoing:
- longer gearing than 997TT (top-speed 329kph)
- worse CwxA coefficient (disadvantage at higher speeds)
- just 50hp more than 997TT
My guess is somewhere around 35s.
MKSGR
I was commenting on RC's source rather than the numbers -if it was a Porsche employee who believed the ~27s mantra then if it was that person's rumour then he may mean under 30s
My guess for the 997GT2 is 32s - I'll spread bet you
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TB993tt said:
Crash, I am guessing from the infantile "owned" pic you posted that you are young ?
How many cars have you had built and tested personally which hit 300kph in close to 30s ?
Maybe you should save the "owned" until the numbers come out ?
The spread bet offer is still open if you have any student grant cash left ?
Quote:
TB993tt said:
Crash, I am guessing from the infantile "owned" pic you posted that you are young ?
How many cars have you had built and tested personally which hit 300kph in close to 30s ?
Maybe you should save the "owned" until the numbers come out ?
The spread bet offer is still open if you have any student grant cash left ?
).
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GT2ETR said:
- When you say normal range is 41-43 seconds for the 997TT, this is based on which information? How many tests that you know of, on how many cars and with what tools please? This will help establish an average or trend.
Quote:
MKSGR said:Quote:
TB993tt said:
Crash, I am guessing from the infantile "owned" pic you posted that you are young ?
How many cars have you had built and tested personally which hit 300kph in close to 30s ?
Maybe you should save the "owned" until the numbers come out ?
The spread bet offer is still open if you have any student grant cash left ?
I think he was just posting the picture because of my "Santa Clause" reference - which was just ment as a joke (I hope that is self explanatory
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GT2ETR said:
Crash anyone can see that you were referring to him, go back to page 4 last post. Too bad this personal stuff gets in the middle of good debates.
RC if you may answer a few questions that I have:
- When you say normal range is 41-43 seconds for the 997TT, this is based on which information? How many tests that you know of, on how many cars and with what tools please? This will help establish an average or trend.
- While the professional GPS based datalogging equipment used by *some* magazines is obviously better, if used properly, the more inexpensive versions are just as accurate by any count. There are also ways to easily check for the accuracy of the data once it has been recorded.
- I agree concerning the different testing conditions, however this applies to both magazines and users of amateur tools. Porsche has claimed sub 30s for the CGT, that sounds quite official, so I would think that they can stand behind their numbers. Less rolling resistence and favourable weather conditions could be a factor, and I am sure they can repeat the numbers.
Separately, the reason we see different 0-200 kph times from different magazines is not really an indicator if a tested TT is faster than the other more likely a) because of the launch times and b) because some of the magazines have shifted before reaching 200kph, which is right at the limiter, and therefore needed one additional shift to get to 200 kph. One gear shift more, would make a difference of 0.2-0.3 seconds to the 0-200 kph times. Porsche was very smart in the gearing choice, 0-200kph times are a strong marketing tool, reminds me of Mr. RUF's wise choices in aerodynamics and gearing..
- I am interested to know why do you think that the Tip is slower by a couple of seconds starting from 200 kph vs the 6 speed? The Tiptronic takes one shift to go from 200-300kph whereas the manual takes 2 shifts.
1 shift less= 0.4 s. advantage for the Tip vs the manual.
As far as the taller Tip 5th gear (if that's the reason), it is taller by about 20 kph vs the manual 6 speed, not much, but more importantly, the Tip will only travel around 500 RPMs in 5th gear before reaching 300 kph after shifting from 4th, therefore any effect of the taller Tip gearing is almost null. Based on the above, I see them both running very similar times to 300 kph.
With that being said, I still don't like the data posted by CGT about his 35s run and he does not seem to want to show more detail, so I am not defending it until then.
We have yet to see any data from the RUF 550, Lukas seems to have disappeared after setting the world on fire.
.
Quote:
Crash said:Quote:
GT2ETR said:
As far as the taller Tip 5th gear (if that's the reason), it is taller by about 20 kph vs the manual 6 speed, not much, but more importantly, the Tip will only travel around 500 RPMs in 5th gear before reaching 300 kph after shifting from 4th, therefore any effect of the taller Tip gearing is almost null. Based on the above, I see them both running very similar times to 300 kph.
Just assume that a the longer gearing accounts for 2-3s more up to 300kph (remember our old discussion on that topic
P.S.: The 4th gear in the Tip car is also taller given the long 5th gear. Thus, the car might lose some time when travelling in 4th gear.
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MKSGR said:
Just assume that a the longer gearing accounts for 2-3s more up to 300kph (remember our old discussion on that topic
P.S.: The 4th gear in the Tip car is also taller given the long 5th gear. Thus, the car might lose some time when travelling in 4th gear.
, I posted data showing that RUF claims are inaccurate, or people/media perceived them inaccurately. The 24-25 second run from the RT12 cannot be reduced by a further 2 seconds by moving to shorter gearing, however by moving to a taller gear you can loose 2 seconds (hence the 27s). In the case of the Tiptronic, it is a different story, the 5th gear Tip run is only during close to 500RPMs, from 5.6 to 6.1k RPMs or so, definitely will not make any perceptible difference in times.
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GT2ETR said:
MKSGR,
I don't think Porsche has any say in what magazines publish, they might like it or not but that is where it stops in my opinion, they might monitor the German mags such as SA, AMS etc, and make a few phone calls, but nothing more.
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