991carreradriver

There are two settings:
1- Normal -Which is not quite the stock Porsche setup. There may be many changes, but the one I can feel in normal is that with my suspension (SPASM) the front end is softer, which is quite welcome for the street.
2- Sport - This is very different from the Porsche set up. Besides reacting to changes in the suspension much quicker than stock, it is completely programmable for the particular situation you want. For example, a particular track config.

Porsche_nuts

So in Sport Plus, DSC does nothing and Porsche software takes over?

991carreradriver

No, in SP+, it remains in DSC normal configuration which is not the same as the OEM configuration. There is no stock Porsche configuration retained except in any values retained by the DSC via their programming. Remember, the controller has been replaced. There is no way for the end user (unless you are a sophisticated computer person) to compare the original configuration of Porsche in the normal or Sport Plus mode with the new DSC controller in normal or sport mode.

StormRune

OP, as far as to the difference you feel, I think that CSK 911 C4S likely nailed it way back in the third post. Coupling the engine more firmly to the chassis does make a difference in how the car rides and does make the ride feel notably different.

It is kind of like the unsprung-weight effect in suspensions, wheels, and tires. In non-sport modes, the engine is softly coupled and the car body can move more freely to respond to bumps since the engine doesn't have to move with it quite as quickly. Less mass to move means a quicker rebound of the chassis. In sport modes when the dynamic engine mounts are more strongly coupled, bumps/dips effect the coupled body and engine more directly as a single mass at the same moment. You can certainly feel the difference.

Actually, this is the purpose of the dynamic mounts... they allow a more compliant and less noisy ride when not driving hard but stiffen to provide a more predictably rigid mass when driving hard (there is no longer a bit of engine "slosh"effect as you turn quickly). If you look at the 997 forums, many of us there have tried solid or semi-solid engine mounts to get the benefits of better handling and a firmer ride. You feel the change right away, but it comes at the cost of the casual ride and noise transmission into the cockpit. The dynamic mounts solve this by changing as needed.

When experimenting with this, the place I can feel the difference most obviously around Austin in on the elevated part of the 183 freeway. It has dips at each bridge panel seam. You can feel a big difference in chassis response to the dips as you change between normal and sport plus settings.

mrmojom3

Storm, I think you are correct. When I press sport something does tighten up a bit. The good news is the sport exhaust still works without pressing the sport/sport plus buttons so I get a nice sound from the exhaust

The guy at DSC described the suspension modes as being "static" where their module is dynamic. I'm looking forward to getting that device to see if it does provide a larger suspension range in normal mode.

chuckbdc

If you haven't done so, you might also consider your tires.

With OEM P0s, the older they are the harder they ride. Switching to new Michelin PSS makes an instant improvement.

Also running the "comfort" pressure settings (~low and mid 30s cold) rather than the "performance" settings ~high 30-low 40s cold) which are both described in the owners manual and not on the door, is well known to make a huge difference in ride quality. If you are not running at top speed with four passengers there is no need to run the higher pressures. Dealers always set them to the max as a liability precaution.