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991 Driveability

Old 09-22-2016, 02:09 PM
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s4one
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Default 991 Driveability

I drive my 991 3.4 daily. I know that 991's are intended to drive while keeping the revs high in the power range, 4k rpm and above.

I dropped off my car for service and am now driving a turbo diesel cayenne as a loaner.

The Cayenne just seems much easier to drive fast, perhaps it is the automatic tranny. I had this same feeling when I had my previous dct e92 m3.

The 991 3.4 is fast, don't get me wrong but i feel like I really have to make an effort to keep speed up 90mph+ but with the cayenne it is much easier to keep 90mph+ and momentum, probably with the turbo and diesel tq help.

This makes me think that the turbo 991.2 is a much more friendly car to drive daily since it has has the turbo tq down low.

Do you guys get this feeling as well? the 991 is my first Porsche so probably need to get used to it.
Old 09-22-2016, 02:14 PM
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I think it's the weight of the cayenne, i got a Yukon XL as a loaner and it was so fast at high speed and i need to use the brakes more often
Old 09-22-2016, 02:19 PM
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Originally Posted by s4one
I drive my 991 3.4 daily. I know that 991's are intended to drive while keeping the revs high in the power range, 4k rpm and above.

I dropped off my car for service and am now driving a turbo diesel cayenne as a loaner.

The Cayenne just seems much easier to drive fast, perhaps it is the automatic tranny. I had this same feeling when I had my previous dct e92 m3.

The 991 3.4 is fast, don't get me wrong but i feel like I really have to make an effort to keep speed up 90mph+ but with the cayenne it is much easier to keep 90mph+ and momentum, probably with the turbo and diesel tq help.

This makes me think that the turbo 991.2 is a much more friendly car to drive daily since it has has the turbo tq down low.

Do you guys get this feeling as well? the 991 is my first Porsche so probably need to get used to it.
The .2 is in fact a much better daily driver.
Old 09-22-2016, 02:30 PM
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I daily drive my 991 GTS with PDK. If I am just plodding around town, I generally drive in normal mode. If I want more kick, I put it in sport mode. There is plenty low-end torque in Sport mode for my taste. I had a 3.4 C2 PDK prior to the GTS and obviously, that is not going to have the kick that a 3.8 GTS has but I still thought that car was plenty fast in Sport mode. In fact, it is a lighter car than the GTS and it feels "lighter on its feet" and more nimble than the GTS. I'm an NA guy, I will never buy a turbocharged car, so I am clearly biased. The 991.2s are definitely going to be quicker off the starting line but I just can't warm up to the turbocharged experience. To each his/her own.
Old 09-22-2016, 02:35 PM
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The 3.4l engine loves to be revved and its in the upper rev range that it really comes alive. So in a sense, you have to be "on it" to get the full performance out of it. When I test drove the 991.1 3.4 I was a little underwhelmed as, at the time I had a 3.6L 997.2 and that 991 didn't feel faster. It felt slower in the lower rev range. When I test drove the 3.8L 991.1 S I immediately felt the extra push in the lower rev range. I suppose it is what you are used to so its all relative.

The 991.2 will definitely have more shove in the lower range and that's maybe that translates to an "easier" daily driver for you.
Old 09-22-2016, 03:28 PM
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Archimedes
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The 3.4l engine just doesn't have much grunt in that 3-4k range, so it's gonna feel slower around town than a lot of the turbo cars out there, like it's more work. That was the primary reason I opted for the S in my .1. I really noticed the difference between the 3.4 and the 3.8 in the midrange.

That said, in a .2, I'd probably go base, as there's plenty of power all the way from the bottom.
Old 09-22-2016, 04:39 PM
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Torque and weight. Less throttle input and less rolling resistance make for a smoother and easier highway run.
Old 09-22-2016, 04:42 PM
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Where do you regularly drive 90+ ??
Old 09-22-2016, 04:43 PM
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I have a 991.1 S w/powerkit and I really enjoy driving it daily. I cannot compare it with the base since I have never driven one (although I did own another 991.1 S for two years previously) but I couldn't be happier with how this one drives. Very quick, plenty of power. Sounds great w/ PSE, too.



I imagine that the 991.2, with all that torque, would be a blast to drive, too. I drove a Cayenne Diesel as a loaner and did not care for it. Lot of weight, lot of vehicle, nowhere near as much fun to drive...YMMV
Old 09-22-2016, 04:58 PM
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The base 3.4 from the 991.1 Carerra makes 286 ft-lbs at 5,600 RPM.

The Cayenne makes 406 ft. lbs at 1,750 RPM. Idle is 800 RPM.

At 2,000 RPM, the Carerra is likely making about 175 ft-lbs. So the Cayenne has more than double at just off idle speed. That much more torque is noticable. So yes, you need to work a lot harder with the 911 to get it moving.

Now once up to speed, the Cayenne only has 240 HP at 3,500 RPM and it is a brick compared to the 911. The 911 has 350 HP at 7,400 RPM. Again you need to work a bit, but you have a vehicle that's well over 1,000 lbs lighter with 100 more HP. Once at highway speed, making passes, the 911 just pulls away. I can tell you that up in the mountains, when I am trying to pass someone in a 60 zone, the Cayenne Diesel can make things a little more challenging than I want. The Sport setting takes care of that.
Old 09-22-2016, 06:28 PM
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Originally Posted by Needsdecaf
The base 3.4 from the 991.1 Carerra makes 286 ft-lbs at 5,600 RPM.

The Cayenne makes 406 ft. lbs at 1,750 RPM. Idle is 800 RPM.

At 2,000 RPM, the Carerra is likely making about 175 ft-lbs. So the Cayenne has more than double at just off idle speed. That much more torque is noticable. So yes, you need to work a lot harder with the 911 to get it moving.

Now once up to speed, the Cayenne only has 240 HP at 3,500 RPM and it is a brick compared to the 911. The 911 has 350 HP at 7,400 RPM. Again you need to work a bit, but you have a vehicle that's well over 1,000 lbs lighter with 100 more HP. Once at highway speed, making passes, the 911 just pulls away. I can tell you that up in the mountains, when I am trying to pass someone in a 60 zone, the Cayenne Diesel can make things a little more challenging than I want. The Sport setting takes care of that.
Yep - I had a 335 diesel for a while and that thing pulled like a train off the line. It would leave an M3 standing but would run out of puff after a few seconds. The turbo diesels are incredible.
Old 09-22-2016, 07:47 PM
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s4one
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I meant mainly keeping speed on the freeway/highway. I guess the 991 3.4 just needs more work as in to keep the pedal down.

Other heavier cars I can gas and the momentum will keep going. I guess this is a characteristic of lighter smaller engine cars such as a miata in the extreme.

I track pretty often in my e46 m3 and now I get a sense of how hard good miatas drivers have to work to beat GT-R's, GT3's, M4's on a tight track.
Old 09-22-2016, 08:17 PM
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My dealer gave me a turbo diesel Cayenne loaner last time my car was in for service and it seriously made me think about getting one. Not for me of course for my wife. But she had other plans.
Old 09-22-2016, 09:24 PM
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"More work to keep the pedal down"? As in somehow your foot does more work if it's closer to the floor?

No modern midrange sports car requires effort to go 90. You must be trolling.
Old 09-22-2016, 10:00 PM
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60mph to 100mph in any 911 variant is a blast. All 911 N/A motors feel torque deprived. That doesn't mean they aren't carrying momentum and speed. Just how the characteristics of the motor leaves you underwhelmed. You may be a good candidate for a turbo or V8 since your craving that torque feel. I've gotten past that since I came from a 20 year run of some very fast turbo cars. I don't look back any longer as I'm very content in how my baby drives.

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