PDCC - how to confirm installation
Discussion
I can only give you a non-technical answer i'm afraid - and that is there is a bunch of extra metal junk connected to the bottom of the front (& rear) suspension struts and control arms, and its clearly visible behind the wheels.
Here's a picture of the PDCC metal drop link being disconnected:
Here's a picture of the PDCC metal drop link being disconnected:
Thanks - I guess I could check the product codes right?
Found this last night - https://www.stuttcars.com/technical/option-codes/
Found this last night - https://www.stuttcars.com/technical/option-codes/
Was talking about it with a Porsche instructor at silverstone last year, from his general thoughts were that if you're quite handy with a car and capable of feeling the limit of grip and driving up to and over it without issues, PDCC is okay but only really on track as it makes you faster but the car more difficult to drive. Conversely he rated PTV as a better value option I.e. He tick the PTV box on a 981 before the PDCC on a 991
ks doesn't it 
Why wouldn't you have it again? The instructors at Silverstone I spoke to seemed to be very much in favour, but also said that it only really does anything if you're pushing the car hard. My PDCC car definitely seems to be more comfortable over bumpy surfaces than non-PDCC ones I've borrowed. Can I tell the difference in cornering? Not sure...
MagicRat said:
Why wouldn't you have it again? The instructors at Silverstone I spoke to seemed to be very much in favour, but also said that it only really does anything if you're pushing the car hard. My PDCC car definitely seems to be more comfortable over bumpy surfaces than non-PDCC ones I've borrowed. Can I tell the difference in cornering? Not sure...
For the following reasons:1. It makes the car less 911-like handling-wise. It's fun for a while in a video game sort of way and slinging the car about on bendy A roads is a hoot. But the 991-ness that the 991 retained is somehow lost.
2. At low speeds on uneven surfaces the suspension will suddenly correct itself and it can cause motion sickness. A bit like when you're a passenger and the driver turns left when you thought he was going right.
3. At high speeds when taking long corners the cars would suddenly give the sensation of snap oversteer. This was reported by other PDCC 991 owners as being like a gust of wind catching the car mid-corner. Unnerving to say the least.
4. PDCC makes the car super picky about tyre pressures.
5. The 991 steering can feel numb anyway. With PDCC it feels like it's been injected with Novocaine. Far too often I had no idea what the front tyres were doing. I just had to turn in and hope I'd exit the bend okay. I always did, but I'd have preferred to have known what the tyres were doing.
I am sure that PDCC is a useful tool for pulling in the fastest times round the 'ring, but for day-to-day use it is at best a waste of money and at worst makes the car unpleasant to drive.
13m said:
For the following reasons:
1. It makes the car less 911-like handling-wise. It's fun for a while in a video game sort of way and slinging the car about on bendy A roads is a hoot. But the 991-ness that the 991 retained is somehow lost.
2. At low speeds on uneven surfaces the suspension will suddenly correct itself and it can cause motion sickness. A bit like when you're a passenger and the driver turns left when you thought he was going right.
3. At high speeds when taking long corners the cars would suddenly give the sensation of snap oversteer. This was reported by other PDCC 991 owners as being like a gust of wind catching the car mid-corner. Unnerving to say the least.
4. PDCC makes the car super picky about tyre pressures.
5. The 991 steering can feel numb anyway. With PDCC it feels like it's been injected with Novocaine. Far too often I had no idea what the front tyres were doing. I just had to turn in and hope I'd exit the bend okay. I always did, but I'd have preferred to have known what the tyres were doing.
I am sure that PDCC is a useful tool for pulling in the fastest times round the 'ring, but for day-to-day use it is at best a waste of money and at worst makes the car unpleasant to drive.
Cheers. I definitely get the tyre pressure thing. Found I couldn't feel what the front was doing at all, but putting the car on comfort pressures transformed it. I've not had the system adjust in strange ways, but have heard this from others as well. Maybe it's because mine is on a GTS and they worked the bugs out; maybe it's just luck.1. It makes the car less 911-like handling-wise. It's fun for a while in a video game sort of way and slinging the car about on bendy A roads is a hoot. But the 991-ness that the 991 retained is somehow lost.
2. At low speeds on uneven surfaces the suspension will suddenly correct itself and it can cause motion sickness. A bit like when you're a passenger and the driver turns left when you thought he was going right.
3. At high speeds when taking long corners the cars would suddenly give the sensation of snap oversteer. This was reported by other PDCC 991 owners as being like a gust of wind catching the car mid-corner. Unnerving to say the least.
4. PDCC makes the car super picky about tyre pressures.
5. The 991 steering can feel numb anyway. With PDCC it feels like it's been injected with Novocaine. Far too often I had no idea what the front tyres were doing. I just had to turn in and hope I'd exit the bend okay. I always did, but I'd have preferred to have known what the tyres were doing.
I am sure that PDCC is a useful tool for pulling in the fastest times round the 'ring, but for day-to-day use it is at best a waste of money and at worst makes the car unpleasant to drive.
MagicRat said:
13m said:
For the following reasons:
1. It makes the car less 911-like handling-wise. It's fun for a while in a video game sort of way and slinging the car about on bendy A roads is a hoot. But the 991-ness that the 991 retained is somehow lost.
2. At low speeds on uneven surfaces the suspension will suddenly correct itself and it can cause motion sickness. A bit like when you're a passenger and the driver turns left when you thought he was going right.
3. At high speeds when taking long corners the cars would suddenly give the sensation of snap oversteer. This was reported by other PDCC 991 owners as being like a gust of wind catching the car mid-corner. Unnerving to say the least.
4. PDCC makes the car super picky about tyre pressures.
5. The 991 steering can feel numb anyway. With PDCC it feels like it's been injected with Novocaine. Far too often I had no idea what the front tyres were doing. I just had to turn in and hope I'd exit the bend okay. I always did, but I'd have preferred to have known what the tyres were doing.
I am sure that PDCC is a useful tool for pulling in the fastest times round the 'ring, but for day-to-day use it is at best a waste of money and at worst makes the car unpleasant to drive.
Cheers. I definitely get the tyre pressure thing. Found I couldn't feel what the front was doing at all, but putting the car on comfort pressures transformed it. I've not had the system adjust in strange ways, but have heard this from others as well. Maybe it's because mine is on a GTS and they worked the bugs out; maybe it's just luck.1. It makes the car less 911-like handling-wise. It's fun for a while in a video game sort of way and slinging the car about on bendy A roads is a hoot. But the 991-ness that the 991 retained is somehow lost.
2. At low speeds on uneven surfaces the suspension will suddenly correct itself and it can cause motion sickness. A bit like when you're a passenger and the driver turns left when you thought he was going right.
3. At high speeds when taking long corners the cars would suddenly give the sensation of snap oversteer. This was reported by other PDCC 991 owners as being like a gust of wind catching the car mid-corner. Unnerving to say the least.
4. PDCC makes the car super picky about tyre pressures.
5. The 991 steering can feel numb anyway. With PDCC it feels like it's been injected with Novocaine. Far too often I had no idea what the front tyres were doing. I just had to turn in and hope I'd exit the bend okay. I always did, but I'd have preferred to have known what the tyres were doing.
I am sure that PDCC is a useful tool for pulling in the fastest times round the 'ring, but for day-to-day use it is at best a waste of money and at worst makes the car unpleasant to drive.
My first PDCC 991 had different suspension from the second. The first car was very stiff and the chassis felt like it was in tension the whole time. The second one felt much softer but brought with it the undesirable handling characteristics I mention above.
Fl0pp3r said:
Does anyone have a handle on what proportion of 991's are PDCC afflicted? I am thinking that most buyers will have been sucked into ticking this box sadly...
Wouldn't bet on it. I think I paid £2200 for it and a big percentage of buyers would either not see the benefit or not want to spend the money.13m said:
Fl0pp3r said:
Does anyone have a handle on what proportion of 991's are PDCC afflicted? I am thinking that most buyers will have been sucked into ticking this box sadly...
Wouldn't bet on it. I think I paid £2200 for it and a big percentage of buyers would either not see the benefit or not want to spend the money.
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