Joined: Nov 2011

Posts: 377

Likes: 3

I am new to 997
not sure if an 07 gt3 RS complete suspension will fit to my 08 c2s?
plug and play
assuming the complete suspension has hats and pasm
do I need addition parts

Will this be a better handling after the rs suspension
not intend to track in the near future

what would be the QPR on a set of suspension

Joined: Jun 2012

Posts: 1,587

Likes: 50

From: MN

Welcome to the club! Your 997.1 C2S is already very capable on the track. There really is nothing needed to upgrade the suspension especially if you do not plan to track at all.

But with that said, there are some suspension mods that are very noticeable for street driving without going to a full race setup. I recommend the following:

1. Proper tire pressure - these cars are sensitive to pressure changes. The numbers on the door sill are for full load (all seats occupied, full luggage in the frunk). Use partial load settings listed in your user manual instead, and adjust as needed. For reference my 2006 C2S I use 33F/39R.
2. Lowering springs - lowers center of mass slightly, improves looks tremendously
3. Spacers - widens wheel track, improves looks as well
4. Aggressive alignment - use GT3 specs as a targer. Go for max camber in front, should get to around -1.1 degrees, and -1.5 in rear should get there easily. Minimal front and rear toe, low side of spec to keep wear to a minimum. Caster is not adjustable.
5. Get a DSC Suspension Control Box - it replaces the stock PASM controller and really transforms handling on a PASM equipped car.
6. Semi-solid motor mounts - helps plant the heavy rear end on turns, stock mounts are hydraulic filled.

These six things alone will do wonders for your car.

Going further is a slippery and expensive slope transforming into a more dedicated track car. Things link coilovers, split LCA's for more camber, monoball camber plates, removing rubber bits, and so on. Honestly it's overkill even for any street car due to NVH and giving up daily driving ability.