CarManDSL

Currently drive a '99 996 with Sport suspension as a DD. Firm but not a kidney basher. Have tested the 991S without either PDCC or SPASM. Getting my option list together for a 991S April build, but sitting on the fence regarding getting PDCC with SPASM, or just PDCC.

Anyone driven the 991 with PDCC and/or SPASM?

fbroen

Dirven with SPASM but not PDCC, yet.

SPASM ride is still pretty darn good with Sport Plus button on, is my take.

I thought ride better even in that setting than my (sold) 997.1 Targa (no PASM / Targas have slightly stiffer rollbars to make up for extra glass weight up high.)

Have a SPASM w/ PDCC on order. Looking forward to getting to try that setup.

GSIRM3

Can't comment on the 991, but I have SPASM on my 2012 GTS and really like it. Not too stiff at all for daily use. Car looks good with extra 10mm drop also.

bmcginn

My only issue with SPASM is the front spoiler which to me looks a little tacky. Is the front spoiler always deployed, or does it deploy at speeds above a certain mph.

Mike in CA

The front spoiler is a fixed piece; it doesn't deploy.

Carrara

Neither.

tibookx

I think PDCC is the must here, while SPASM would be the "optional extra".

Pincomar

My dealer's demo car (with the front spoiler) had already been scraped, and the car didn't have 1,000 miles on it yet. The dealer even told me how much the replacement spoiler cost! I suspect most of us wont appreciate the PDCC either. I am tempted to pass on them both.

CarManDSL

Pincomar, Did you test the car with SportPASM?


I tested a 991S (no SportPASM or PDCC) again today focusing on a few very rough city streets in Vancouver, switching the Firm Shock setting on and off to get a better feel of the differences. I then followed the same route later in my '99 996 with Sport Chassis.

The 996 is firmer than the firmest shock setting in PASM. The 996 was louder over the road and the hits much sharper through the chassis and seat. (The 14way Sport 991S seat was much more comfortable.)

The 991S in the firmest setting was much more comfortable, more stable and quieter over the bumps. Still felt the hits, but so much smoother. Compared to the 996 Sport suspension, I could easily live with the 991S firm shock setting on all the time. But it is nice to be able to turn that off over sustained rough roads.

This exercise was to give me a better sense of how much firmer the 991S Sport PASM might be. My mechanic also found the following spring rates on the 991.

Model_______Sway bar diameter_______front spring_____rear spring
991_________26.8 x 4.0 mm (hallow)____24 nm_________48 nm
991S________26.8 mm________________28 nm_________62 nm
991S Sport___28.0 mm________________33 nm________108 nm

The spring rates on the 991S Sport is so much firmer than the other models.
All this is so subjective. I really need to test the SportPASM.

emode took delivery of his 991S with SportPASM at this thread.

https://rennlist.com/forums/991/6802...pasm-20-a.html


Does anyone have the spring rates for 996 or 997 with and without Sport?

fbroen

Thx for info. Would love to see some ground clearance figures for 991 variants, too. Anyone w/ a manual?

aamersa

Niether, unless you plan to go on track. Even so, not a must.

fbroen

aamersa -- you are very consistent in your not a must messaging. Have you driven either? (edit: either the PASM Sport or the PDCC -- I know you have a kick *** red 991)

And as far as the limits of the car, the "not a must" would of course apply to a lot of the 991 altogether, or even the whole car itself.

aamersa

Nope have not driven either. But having driven a 991 I can assess what additional options would be useful and which not, at least for city driving. Why fix what isn't broke? The 991 suspension is so firm that I would not want it firmer and the handling on turns/corners better than any one could possibly need in the real world, track exception aside. I have no vested interest. I just make recommendations to save people money on options that they do not need and the lack of which will not lessen their driving enjoyment.

CarManDSL

I agree with you 100% . . . if you just like driving around town, highway etc.

I do a few DE events a year and take particular glee in being able to take down most 996 GT-3's on my home track with just a plain old 996 with Sports Chassis, Yoko A-048's and stock brake pads. I get sweetie palms just thinking about the possibilities of a decked out 991S!!

But I do use my car as a daily driver and that is 99% of my driving. Sometimes we have to make concessions. That is why the PDCC is so compelling . . . smoother over the bumps and around town with just PASM, but flat and therefore stable and grippy in the corners, where it counts for that GT-3 take-down experience!

I think I have answered my question.

aamersa

I think the only place you may benefit from the pdcc is on the track, and now that I know that you plan on doing that a few times a year, I would recommend getting it to eliminate any doubts. As far as urban driving, pdcc which is supposed to virtually eliminate body roll, I am yet to experience any body roll (w/o pdcc) despite some fairly aggressive driving.
Not sure how permanently lowering the suspension another 10mm plays, making it stiffer which is then offset to some degree by the pdcc making it smoother.