RajuPatel

What I meant to ask is what is the minimum/maximum lowering in the front and the rear axles for the 997.1 turbo TT?

Tom@TPC Racing

Our recommended baseline ride height for 997 Tractive coilovers is 106/128mm using OEM measuring method, with OEM size tires*. For reference this is pretty close to OEM GT3 ride height. The Tractive DDA coilovers can easily go +/-10mm from baseline. However, we don't recommend the far end of the lowering range when using the standard 313/616 because lowering will decrease available travel(stroke) of the suspension. All shocks work optimally only with sufficient travel. Any shock operating without sufficient travel for the design cannot do its job, it'll then just become a piece of metal that's along of the ride. GT3 Cup and GT3R for example use 1000+ lb springs so the travel is limited by the movement of the very heavy springs, thus they can be lowered more since the suspension travel is limited by the springs. So if you put Cup car springs on Travtive shocks then you can run Cup car ride height.

*Denote different size tires will alter the ride height. For example a 10mm taller tire will naturally make the ride height 5mm higher.

RajuPatel

Hi Tom,

I am running the TechArt Bilstein Damptronic B16 with Nose lift. I am also using the DSC box. At the present setting (which is definitely lowered, but i don't know how much) i clear most speed bumps, barring few big ones. I would love to have an additional 5mm raised height and I would be ok. I am running stock wheels and tyres. Can you guide me as to how to measure? From the wheel hub centre to the fender edge? Any other method?

City roads and some freeways have very bad road surfaces. SO much so that at high speeds it is a back breaking drive. Hence would love to have a more compliant spring rates (but not at the cost of bottoming out) to cope with the city ride as well. I am never going to track my car. Hence i can live with a more manageable ride.

bmwtye

Any updates on the lift kit for cars that didn't originally have that

a_Y

I am wondering if we have the old firmware with 3 modes, how can we go abouts to updating it to the newer firmware with 2 modes?

For those who have tried both, which one is better?

RajuPatel

@ a_Y my unit came with 2 modes, like the OEM damper control. On (Light on-Sport mode) and Off (light off-normal mode). Though i would have loved to have "as many" modes as possible , but selecting more than two modes via a switch is cumbersome and painful. Now that i have changes the TechArt spring to SWIFT Springs, the ride quality is great (even on our bad bad roads) and on good roads, it is superlative in terms of body roll control and handling...

changster123

For the Tractive coilovers (not OEM shocks), from what Tom told me it'll be summer time before it's available.

boostedt0y

I had the old firmware with 3 modes and recently updated to the new firmware with 2 modes. Car is used primarily on track and the stiffest modes in both firmware feel similar. However, I feel like the softest mode in the 3 mode firmware provided a smoother ride compared to the softest mode in the 2 mode firmware.

a_Y

That's a great review. In that case, I will probably just stick with my 3 mode one as the roads here in Hong Kong are pretty awful. Thanks!

nzskater

You can adjust the settings using the PC application so that normal is softer if that is needed. Happy to upload mine if you want to try it (I have Normal setup to be a little softer).

DSC Sport

I would strongly recommend downloading the tuning software and checking out your current calibration file. Or you can perform a Read All function, save your .pdts file and send it to me, and I can take a look for you.

The tuning is more sophisticated in the 2-mode and actually allows for greater comfort with more tuning parameters. I'm guessing your Default Rate is just a greater value than you would prefer for comfort driving.

^See above, I strongly recommend the 2-mode firmware. It's more sophisticated, it's up to date, and it works better with the tuning software.

TRAKCAR

Haven't read the thread yet completely but subscribed.
Been playing with the DSC box in soft and hard at Sebring April 8th and with an updated file last Saturday. Will make a write up what I am running in 991RS when I can, but it's very interesting and it works.

a_Y

How can I upgrade to the two mode firmware?

Tom@TPC Racing

Simple. Send your DSC module to us for firmware update. The update is free for the original purchaser. Sender pays the shipping cost. It is very worthy!

Tom@TPC Racing

Thank you for subscribing. We look forward to reading your write up and provide any tuning support!