Hi Guys,
I have found the OEM PASM (on) suspension setup is too bumpy on the road and too soft on the track. Have anyone tried the Bilstein PSS-9 coil over kit with PASM or any other kit? What are the pros and cons? Any problem with front bumper clearance?

pics- http://normanhkg.spaces.live.com/

 

Lower you tire pressure. The sticker on the door jamb is for a fully loaded car, the setting for a partially loaded car is in the manual and its significantly lower. The ride is much better with the lower setting.

 

No Pss9 kit for 997TT available right now- Only 997s with PASM, spring rates and valving are different.

We are working with Eibach on a lowering spring that will work with the 997TT PASM dampers and eliminate (reduce) the bounce you are experiancing. This will be a GMG exclusive spring set under the WCGT line of parts. You can do a few other things to improve the feel of the car as well as the responsiveness:

GMG Rear Dog Bones
GMG Thrust Arm bushings
GMG Inner A Arm bearings
GMG Rear toe steer kit

http://www.gmgracing.com/porsche_suspension.shtml

The problem with most lowering springs on the market currently is that the spring has just about the same spring rate as the stock spring and they only lower the car but dont offer any signifigant performance advantage.

If you need more info feel free to give me a call.

 

How much different will your GMG rate be compared to the Techart(Eibach) rates?

 

Both the rate and the design of the spring are different. More info to follow as we are currently testing and should have a complete release in about 30 days.

 

I had ordered the PSS9 about 2 months ago, but my suspension dealer told me 2 weeks ago tht it wont be deliverable until end of june. So I cancelled the order and took sportec springs H&R and I am happy with those to be honest.