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ELECTRIC POWER STEERING PLUS ON 991 / C4S.

Dlff

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Joined
13 Jan 2012
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Hi guys, I have just read a letter posted by 991 C2S's owner to an independent Porsche magazine. He says that the Power Steering Plus should be avoided at all cost. He complains that the weight of the steering is too light but have yet to experience a situation whereby he has to curse the Power Steering Plus option fitted to his car.
I'm just wondering if this is good option to have on the C4S as the car is heavier & more weight is added to the front because of the 4WD hardware.
Thank you & all opinions & advices are welcome. Cheers mate & have a smashing New Year with the 991 GT3 & Turbo unveiling this year.
 
If you are new to Porsche 911s then it probably won't make any difference to you. PSPlus will aid parking manoeuvres for sure. If you have experienced 911s before then you can't have failed to notice what a delight these cars are to (hydraulically) steer. All the feeling of the road comes through the steering wheel and the older the (911) generation, the more you can feel it. It is very sharp and succinct in its execution (especially the RWD cars).

PSPlus will completely remove the steering feel and it would be as though you are driving a fast BMW or Mercedes Benz. If you're a bit of an enthusiast, I would recommend to avoid this option. Some enthusiasts lament the deletion of the hydraulic steering altogether as the 991 comes with electric steering thereby losing some of the feel already. Indeed if I am lucky enough to have a 991 in the future, I will be seeking car without that particular option.

Just my 2p.

~ Maxie
 
Maxie said:
It is very sharp and succinct in its execution (especially the RWD cars).

Just as a counter-point, regarding the fundamental chassis characteristics and the AWD variants' better (closer to 50:50) weight distribution and slightly more weight over the front hence mitigating some of the over-lightness and floaty/bobbing front end inherent in 911.

Additionally with the stronger front chassis and suspension structures over the C2 (shared with the GT3), the front is more torsionally rigid and hence more consistently helmed in the right direction.

The fact the drive is effectively in "coast" at 5% torque for all but the times the rears spin and lose traction, means there is no torque steer to pollute the steering feel over 2WD.

This is Autocar's inaugral review of the Carrera 4:

4 SURE - 911 Carrera 4

  • All wheel drive doesn't just give Porsche's newest 911 extra stability and safety - it also boosts driver involvement. Peter Robinson reports.
Your fingers convey the information the instant you turn the wheel. The steering is heavier, meatier, less sensitive. Not much, but enough of a difference to be immediately discernible to hands acquainted with the rear-drive Carrera.

The distinctions grew the longer we played with the Carrera 4 on the wonderfully demanding roads surrounding Porsche's Weissach proving ground. A bit more steering lock, a sense of mild understeer in a second-gear hairpin. Extra steering effort as increasing lateral forces amplify steering loads through a fourth-gear sweeper. A fraction less self-centring. Finally - and prepare for the ongoing arguments - a perception that this steering is actually more involving than that of the Carrera 2.
...
It takes no more than a couple of corners to fall in love with the C4. It's a normal 911, only better. More stable, especially at the high speeds the Carrera so quickly attains, less nervous in strong crosswinds, and even more consistent in its dynamics. At first it seems slightly less agile, because wheel movements are bigger, but experience reveals that its handling is actually more neutral, less oversteery.

Experimentation with the PSM reveals that the C4 responds to a smooth driving style and minimises the need for driver reactions, making it more relaxing to drive than the C2, not least a very high speeds on the autobahn.
...
All the driver understands is that the nose is less prone to pushing wide. The engine management system is set up so that if you lift off suddenly in a bend, a degree of torque is maintained to smooth out the weight transfer and reduce the car's reactions. It all makes for a supercar that is as failsafe as any, yet remains fun to drive quickly, the electronics doing their job so unobtrusive that most drivers won't even notice, unless they attack corners with arms flailing. Even then, it's effectively impossible to throw the C4 off balance, though not even the C4 can defy the laws of physics.
...
The choice between C2 and C4 remains as complex as ever. The C4 is undoubtedly the more talented car, exuding an invincible air that many will find irresistible.
 
Im on my 4th 911 now and i went for the power steering plus. Its FANTASTIC! Very nimble around town and on the twisty bits blisteringly accurate.
 
In the current issue of EVO magazine, they are road-testing a 991 C4S. It got 5 stars and the writer said thankfully it came without the PSPlus option which EVO haven't been a fan off.

I guess only the OP can decide once he's driven one with and without, side-by-side.

~ Maxie
 
Didn't think much to it when I tested an S with it (before I ordered mine)

Waste of cash IMO
 
You cant judge it by a test-drive. It's something that gets better every time you go out in it. Was i sceptical when i first heard of it? Hell yes! Everyone saying it will "ruin the feel" of the car. What a load of rubbish! I bet half the people who own 911's wouldnt know unless you told them anyway! I doubt very much that the boffins at Porsche sat down and said" i know lets ***** up one of zee most iconic cars of all time and put a ridiculous steering system in it" Having said that...... there was the 996 headlights!!! Ok, its down to personal choice. :thumb:
 
I expect PSPlus on the 4s is like the City mode on my Panda 4x4.
Works a treat so should be fine on the 991.
Best
tim
 

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