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Numb Steering?

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Old 08-25-2018, 11:24 AM
  #76  
GrantG
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Originally Posted by Valvefloat991
Hydraulic power steering with an electrically-driven pump also has parasitic drag. Where do you think the electricity for the pump motor comes from? In fact, it probably has more parasitic drag than electric power steering due to hydraulic pump inefficiencies.

That said, it probably feels better.
Tha alternator doesn’t have to charge under full throttle (just as the AC compressor is turned off under full throttle also). The battery has enough capacity to maintain the electrical power during these periods.
Old 08-25-2018, 11:56 AM
  #77  
Valvefloat991
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Originally Posted by GrantG

Tha alternator doesn’t have to charge under full throttle (just as the AC compressor is turned off under full throttle also). The battery has enough capacity to maintain the electrical power during these periods.
True enough, but that strategy works for electric power steering as well. And while this charging strategy is commonly used on modern street cars, it requires a bigger--and heavier--battery than the conventional charging strategy, as BMW found out whenit suffered a spate of dead batteries in 5-series cars a few years back.
Old 08-25-2018, 01:47 PM
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Originally Posted by gellie
Nice. For the life of me I can’t even understand why Porsche offers PSP? What demographics are they marketing it to?

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Old 08-25-2018, 01:56 PM
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Last edited by STG; 08-25-2018 at 02:32 PM.
Old 08-25-2018, 02:17 PM
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OP, is your 991 a Targa like your 993 was? I believe the Targas are all AWD models, which is going to add far more numbness to the steering than EPS ever would.
Old 08-25-2018, 03:12 PM
  #81  
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Originally Posted by Valvefloat991
True enough, but that strategy works for electric power steering as well..
Yes, but you get far better steering with hydraulic (as per the title of this thread). I wasn’t trying to say hydraulic with electric pump was more efficient, just that it’s possible to have hydraulic steering without a significant engine performance nor mpg penalty.
Old 10-31-2018, 05:09 PM
  #82  
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Just back from driving the mountain roads in the Smoky's. I have no better opinion of the 991.1 steering. Still awful. It just wants to center with strong power steering doing that. Not a fun car to drive as was the 993 Targa on same roads. This thing is like fighting a truck to go fast and smooth.

Haven't had chance to read all of the more recent posts. But, doesn't sound like anyone has found a solution.
Old 10-31-2018, 06:46 PM
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Originally Posted by ipse dixit
Drive around in a Camry for a few days then hop back into the 911.

It'll feel perfect by then.
Great, now we are comparing the 911 to the Camry. Might as well go all the way with a Yugo.
Old 10-31-2018, 07:10 PM
  #84  
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My second biggest pet peeve, after equipping all non-GT models with turbos, is the darn electric steering.
To those that defend it, I respectfully disagree and try to drive a decent sports car with a hydraulic steering rack back to back, then come tell me there isn't a significant difference.

Porsche - bring back hydraulic steering!!!!!
Old 10-31-2018, 07:45 PM
  #85  
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Originally Posted by VintageRacer477
Just back from driving the mountain roads in the Smoky's. I have no better opinion of the 991.1 steering. Still awful. It just wants to center with strong power steering doing that. Not a fun car to drive as was the 993 Targa on same roads. This thing is like fighting a truck to go fast and smooth.

Haven't had chance to read all of the more recent posts. But, doesn't sound like anyone has found a solution.

Is your car a C4S?

I have a 991.2 GTS RWD.. I drove a 991.1 4S the other day and the steering was very bad. A combination of a 'disconnected feeling between steering wheel and road/tires' and the weight of the AWD was shockingly bad.

In comparison the 991.2 GTS steering feels snappy and ultra nimble. Especially on Cup 2 Michelin's.

Then again, the 991.2 does have revised steering among many other things.
Old 10-31-2018, 07:46 PM
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Originally Posted by Bemo
My second biggest pet peeve, after equipping all non-GT models with turbos, is the darn electric steering.
To those that defend it, I respectfully disagree and try to drive a decent sports car with a hydraulic steering rack back to back, then come tell me there isn't a significant difference.

Porsche - bring back hydraulic steering!!!!!
Definite no no on the hydraulic steering. More belts, more fluids, more drivetrain loss and MORE WEIGHT.
Old 10-31-2018, 07:50 PM
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Originally Posted by Bemo
My second biggest pet peeve, after equipping all non-GT models with turbos, is the darn electric steering.
To those that defend it, I respectfully disagree and try to drive a decent sports car with a hydraulic steering rack back to back, then come tell me there isn't a significant difference.

Porsche - bring back hydraulic steering!!!!!
I had an E92 M3 and a 991.1 GT3 at the same time, and the electric steering in the GT3 felt much better. It also felt much better than my 997.1TT which was also hydraulic. It's possible to do it right. I've heard the non-GT 991.1 were much worse, though, although supposedly the 991.2 is improved across the board. My 991.2 GTS feels amazing, and when I get my 991.2 GT3 in the next week or so I'm sure that will feel better than any car I've owned.
Old 10-31-2018, 10:03 PM
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The feel in the steering on my 991.2 GTS is perfect for me... You could add monoball bushings up front and A LOT more road feel if you're about that
Old 10-31-2018, 10:52 PM
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Originally Posted by reacher
I had an E92 M3 and a 991.1 GT3 at the same time, and the electric steering in the GT3 felt much better. It also felt much better than my 997.1TT which was also hydraulic. It's possible to do it right. I've heard the non-GT 991.1 were much worse, though, although supposedly the 991.2 is improved across the board. My 991.2 GTS feels amazing, and when I get my 991.2 GT3 in the next week or so I'm sure that will feel better than any car I've owned.
Interesting perspective! I got into an E92 few months ago and I much prefer its steering, especially when I drive it back to back with the .1 GTS. I test drove a .2 base and wasn't impressed, as far as I'm concerned no improvements in the steering. Haven't yet had the pleasure of driving a .2 GT3 but if it takes $200k+ GT car to get electric steering that is on par with my 9yr old 3 series, which cost me $44k new, then shame on Porsche! They claim fuel savings but on average, that is %0.04 or 1MPG compared to hydraulic so they can look for the savings elsewhere. My cynical guess is that the electric system is cheaper to produce and improves overall profit margins, which is their main MO while we are being fed the MPG improvements. Smoke and mirrors....

Glad you're happy with the system, I'm miserable after having spent 112 on the GTS hence the ~60k M3 investment. Now all other aspects (lightness, handling, brakes) would go to the GTS all day long...
I suppose a dream swap would be to be able to rip out the M3 steering and throw it into the GTS....but life is about compromises...

Happy motoring!
Old 11-01-2018, 12:09 AM
  #90  
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Originally Posted by Bemo
Interesting perspective! I got into an E92 few months ago and I much prefer its steering, especially when I drive it back to back with the .1 GTS. I test drove a .2 base and wasn't impressed, as far as I'm concerned no improvements in the steering. Haven't yet had the pleasure of driving a .2 GT3 but if it takes $200k+ GT car to get electric steering that is on par with my 9yr old 3 series, which cost me $44k new, then shame on Porsche! They claim fuel savings but on average, that is %0.04 or 1MPG compared to hydraulic so they can look for the savings elsewhere. My cynical guess is that the electric system is cheaper to produce and improves overall profit margins, which is their main MO while we are being fed the MPG improvements. Smoke and mirrors....

Glad you're happy with the system, I'm miserable after having spent 112 on the GTS hence the ~60k M3 investment. Now all other aspects (lightness, handling, brakes) would go to the GTS all day long...
I suppose a dream swap would be to be able to rip out the M3 steering and throw it into the GTS....but life is about compromises...

Happy motoring!
The electric power steering is actually more expensive than the hydraulic variety, especially the rack-mounted systems that Porsche uses. While the fuel economy savings is small, probably half an mpg, it is still important in the current regulatory regime that is demanding substantially higher fuel efficiency in countries all around the globe. Improving the efficiency to that degree by other means is probably even more expensive, and in this environment, even Porsche sports cars don't get a pass.


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