Only the yaw sensor is active. So your car has to be pitching a lot for it to come into working. If you have a stiff aftermarket suspension, there is less intervention. I have yet to feel psm's yaw component involving itself after installing the PSS10 setup and stiff sway bars. But I am sure I will experience it at some point.

 

This is the first time I hear of this. 10-15 seconds press hold switch completely disabling PSM until key off/on? Did you go for a drive and can confirm PSM is off even if you engage brakes? Must try this...

 

I haven't had a chance to test it. I just thought it was interesting that the light goes out after you hold the button for 10-15 seconds and you can't get it back on.

This is probably best tested on the track, but hopefully I get a chance to do some testing.

Later, Steve

 

here is a few good vids of a mostly stock 996tt that with minor upgrades does quite well.

http://www.youtube.com/watch?feature...&v=JhkdWSiMaMo

 

Nice one.....rep point for that very much enjoyed. You did well. That GT2 was a bit jittery wasnt it

 

Here is a quick update.

After holding the PSM button for 10-15 seconds and getting the PSM OFF light to turn off, I believe the PSM is still on. At full throttle in 2nd gear, the PSM OFF light began flashing as the tires started to spin.

Apparently it doesn't disable PSM.

Later, Steve

 

I thought as much. Damn! I was looking foward to this one being a total disable. Porsche should have done it this way.

 

Thats the traction control side of it working .Even with PSM off you still get traction control but it doesn't intervene with the throttle/engine power.
If driving in snow its best to turn off PSM as PSM intervenes too much killing engine power to almost nothing. Snow.....some thing I'm quite used to driving in tbh.
With PSM off it is still active in the back ground but to a limited extent. If you do a fast lane change to avoid an accident for eg and the car gets out of control, PSM will intervene to try and correct the problem.

Its the control of the throttle angle that is the issue with PSM when on the track, the sudden lack of power if the rear end drifts. But its that very action that has removed the stigma of the 911 and 911 Turbo being a "Widow Maker".

I would much prefer a good LSD and the ability if required to completely turn off PSM on track days and have it 100% for road use. Just my take on PSM.

 

I feel the same. On for the road and the ability to switch it off completely for the track. That would be ideal. But LSD would then be a must. Otherwise the car would be ridiculous to drive.