Which is quicker - 991 C2S PDK vs 997 C2S PDK - Drag race?
Discussion
Yup, you guessed it. The 991 pulls an effortless lead on the 997. Stats are similar, so is this down to better traction and improved/quicker gearbox (PDK) changes?
http://www.youtube.com/watch?v=Vmt4W5SrLJI
http://www.youtube.com/watch?v=Vmt4W5SrLJI
Poor drag race as both cars were clearly not in the same Launch Control mode. You can see the 997.2 brake lights go off, roll forward then Go, so the 997.2 was clearly not in Launch Control mode (car would have been static before going). The 991S was static before releasing - likely because it was in Launch Control mode.
A more interesting comparison would be against the GTS+PDK which will have Launch Control and the same engine as the 991S (a 997.2+X51).
A more interesting comparison would be against the GTS+PDK which will have Launch Control and the same engine as the 991S (a 997.2+X51).
spareparts said:
Poor drag race as both cars were clearly not in the same Launch Control mode
If you look at the clip again, 3rd and 4th gear is where the 991 pulls a significant lead on the 997. And fwiw (and from experience of driving the GTS *and* a standard non-power-kit C2S), the extra 5% power of the GTS would not be enough to save the day either. 991 is ( or at least seems to be) much quicker once moving.Phooey said:
spareparts said:
Poor drag race as both cars were clearly not in the same Launch Control mode
If you look at the clip again, 3rd and 4th gear is where the 991 pulls a significant lead on the 997. And fwiw (and from experience of driving the GTS *and* a standard non-power-kit C2S), the extra 5% power of the GTS would not be enough to save the day either. 991 is ( or at least seems to be) much quicker once moving.Differences between PDK drivetrain is gearing and the PDK software. 991S is geared shorter than the GTS.
So, 5% less power with a standard 997.2, not in Launch Control, and with slightly longer gearing = the video results you see and would expect.
Edited by spareparts on Sunday 18th March 10:46
Phooey said:
Exactly. The 991 is quicker. Which lets be honest, is to be expected. I just thought the above clip was a good indication of by how much
LOL! Selective reading at it's best. It is a TERRIBLE video comparison, precisely because it does not show by how much when one car is using Launch Control vs the other car using what is effectively a very slow rolling start (always slower)
Edited by spareparts on Sunday 18th March 12:27
spareparts said:
Phooey said:
Exactly. The 991 is quicker. Which lets be honest, is to be expected. I just thought the above clip was a good indication of by how much
LOL! Selective reading at it's best. It is a TERRIBLE video comparison, precisely because it does not show by how much when one car is using Launch Control vs the other car using what is effectively a very slow rolling start (always slower)
Edited by spareparts on Sunday 18th March 12:27
Firstly, I am far from persuaded that LC offers significant benefits over a conventional standing start and it is almost certainly slower than a rolling start.
I'd also be interested to understand how you think launch control had any impact upon the outcome of that drag race, because the ground the 991 made up was after both cars were well down the track. From the start they were broadly similar, as you'd expect from cars with a similar power output and transmission. But then the 991 leaves the 997 for dead.
I knew the 991 was quite a lot faster but I am surprised that it is THAT much faster.
J-P said:
Lighter, more powerful, improved tech car in drag race win shocker! 
@ SP GTS has slightly more power than 991C2S (408hp vs. 400hp). But it's also heavier and the PDK isn't quite as quick, so even with both cars on LC, you'd absolutely expect the 991 to win.
Agreed that the 991 should win- Porsche quote 0.1s better acceleration to 62mph. @ SP GTS has slightly more power than 991C2S (408hp vs. 400hp). But it's also heavier and the PDK isn't quite as quick, so even with both cars on LC, you'd absolutely expect the 991 to win.
spareparts said:
J-P said:
Lighter, more powerful, improved tech car in drag race win shocker!
@ SP GTS has slightly more power than 991C2S (408hp vs. 400hp). But it's also heavier and the PDK isn't quite as quick, so even with both cars on LC, you'd absolutely expect the 991 to win.
Agreed that the 991 should win- Porsche quote 0.1s better acceleration to 62mph. @ SP GTS has slightly more power than 991C2S (408hp vs. 400hp). But it's also heavier and the PDK isn't quite as quick, so even with both cars on LC, you'd absolutely expect the 991 to win.
Callughan said:
Officially 991 is .7 quicker to a 100
It's after 62 when the party starts. So the above stats would work out at .6 of a second quicker to do the last 38mph - and that is demonstrated in the above clip.spareparts said:
J-P said:
Lighter, more powerful, improved tech car in drag race win shocker!
@ SP GTS has slightly more power than 991C2S (408hp vs. 400hp). But it's also heavier and the PDK isn't quite as quick, so even with both cars on LC, you'd absolutely expect the 991 to win.
Agreed that the 991 should win- Porsche quote 0.1s better acceleration to 62mph. @ SP GTS has slightly more power than 991C2S (408hp vs. 400hp). But it's also heavier and the PDK isn't quite as quick, so even with both cars on LC, you'd absolutely expect the 991 to win.
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