cooler2442

DSC told me that the new controllers(I have a newer one) are actually smart enough to make adjustments on the fly and running the 991.2 GT3RS file was completely fine. I ran a 718 GT4 file on my other DSC for my 981 GT4 and worked perfectly. I know some touring owners also run a 991.2 3RS file.

From DSC:
So you're saying the 991.2 GT3RS file I have right now on my 991.2 DSC sport controller I can just plug into the GT4RS and it will work just fine?
Yes. Correct. Normal mode rides softer and Sport mode stiffens up dynamically to g-force.
You should zero the ride height sensors when you switch the controller to a different car because of different ride height. Zeroing the ride height sensors is unrelated to the calibration file.

I was under the impression that I needed a specific file for the specific car which was why I was emailing.
We did make specific files for each model back when we first introduced the controller. As we developed the technology further and further over the years, we learned the better approach is to utilize more of each model's specific OEM shocks & springs configuration from the factory by making the controller's command more actively to the driver's input to operate within the available range of the OEM parts.

Larry Cable

interesting I did not know this!

jmartpr

Tom from TPC has send me specific files for the GT4RS....while a file from other models works it may not be optimized, specially if using one from a 911.
The last one he sent me for low traction surfaces helped tame some of the TC intervention on bumpy corners.

Ksdaoski

Mind sharing it?

TRZ06

I believe it is both. It is over damped on the compression side (hence the pogo stick effect) and under damped on the rebound side, hence the rear end lifting up way too much on bumps. It is also a function of the internals of the shocks. You can only do so much with algorithms.

Also (at least on my GT4, not sure about the 4RS) the front and rear axles did not "talk" well together, especially noticeable when hitting a bump mid-corner with the suspension loaded up.

MCS made a WORLD of difference on both issues for me. Having said that, the inherit issue of the rear losing traction on tight bumpy turns is still present. Sure, you can dial that out with clicks on the MCS dampers, but then the whole car is too soft for high speed work. I think that is just a characteristic of the chassis and having struts in the back of the car.

168glhs1986

Have you tried TC off for Canyon Runs? That would solve your problem.

TRZ06

That is bad advice for public roads. If TC is kicking on in a Porsche GT car (they are pretty leinent) that is telling you that you are over driving the car. Once a mid-engine car starts to rotate, it does so with authority.

Westcoast

I don't have a 4RS/SRS but I did do the suspension in my Spyder (RSS Stage 2 kit), I also added the DSC controller and felt this made a huge difference in the overall stability of the car over rough pavement. (your bolded comments)

I find that in Normal Chassis the street composure is perfect, in Sport Chassis everything is sharper and more immediate, perfect on smooth pavement like the track and when you are pushing it.

DSC FTW!

Westcoast

PCCB or iron brakes? I found that PCCB equipped cars exhibited less wheel bounce and felt more composed on rough roads.

168glhs1986

True, safety and driver / car control first. If you aren't comfortable with turning both ESC and TC off you can start with just turning ESC off and leaving TC on.

What I would recommend is HPDE and skid pad training first until you get comfortable controlling the car and not having the car control you.

dnimi123

Not nearly as much with coilovers and a proper alignment.... and yes this is exaggerated in the 4RS. The DSC is a band aide approach (ive tried it) and doesnt go far enough to help the car. Im still considering the 4RS but would immediately put in coilovers if I pull the trigger on one... whats another $9,000 for better compliance and feel and handling...

fxz

Spyder RS , PCCB i need a Road setup,

GT4 RS on track was not less in lacking precision, but could (Spyder RS only...) take it as an "old school" nasty personality and keep it as it is ,

just wondering if something let you set the rebound, maybe just an OEM fine tuning,

are compression/rebound mechanical settings allowed on the 718?

7184RS

OMG reading this post I'm stating to regret selling my Exige V6 (which had the sublime nitrons 3 way from factory) to buy the GT4RS

I already bought Porsche motorsports toe links and front camber plates to do a proper alignment ..if that is not enough I will try DSC Sport 🫣

fxz

I have 3 ways on Taycan 4S,
top notch ride quality

KelvinC

Some say 1 out of every 4 GT4 RS’ try to kill their owners. Something about “it’s the car that picks the driver” or something like that.

Best of luck with your suspension issues fellas.

If you’re super frustrated with it, you might consider selling it and getting a GT3 if you still want a GT car. It’s an easier car to drive quickly.